5-Hydroxytryptamine2A receptor binding activity of compounds from Litsea sessilis

A 96-well microplate filtration based 5-HT(2A) receptor-radioligand binding assay was optimized and adopted to carry out a bioassay-guided fractionation of the methanol extract of the leaves of Litsea sessilis. This purification led to the isolation of two compounds identified as (+)-boldine (1) and (+)-dehydrovomifoliol (2). (+)-Boldine binds to 5-HT(2A) receptors at high concentrations with a K(i) value of 2.16 microm. However, (+)-dehydrovomifoliol showed minimal competitive inhibition on the binding of [(3)H]ketanserin to the same receptor with a K(i) value of 2.06 mm. These results suggest that (+)-boldine influences the activity of 5-HT(2A) receptors through competitive binding as an agonist or antagonist.     

连翘对豚鼠离体回肠运动的影响

目的:观察连翘对豚鼠离体肠管运动的影响,以期探讨其止呕作用的机制。方法:以呕吐相关受体激动剂为工具药,利用离体恒温浴槽,观察连翘对豚鼠离体回肠收缩的影响。结果:连翘能够抑制离体肠管的自发活动,表现为收缩张力降低,并呈剂量依赖性关系。乙酰胆碱(acetylcholine,Ach)、组织胺(histamine,His)、五羟色胺(5-hydroxytryptamine,5-HT)能够兴奋肠管,使张力升高、振幅变大,连翘高(10 g·L-1)、中(5 g·L-1)、低(2 g·L-1)剂量均能抑制以上3种工具药所致肠管收缩,降低其收缩张力和振幅,但对频率无明显影响。多巴胺(dopamine,DA)能够抑制肠管收缩,表现为张力降低、振幅变小,连翘高剂量和中剂量能够拮抗DA的肠管松弛作用,使张力升高、振幅变大;连翘低剂量能够进一步使张力降低,但使振幅增大。结论:连翘可以抑制豚鼠回肠运动,其机制可能是通过阻断肠平滑肌上的M受体、H1受体、5-HT受体和D2受体,也可能是对肠管的直接抑制作用,其止呕机制尚待进一步深入研究。     

Inhibition of angiotensin II receptor binding by quinolone alkaloids from Evodia rutaecarpa

A biologically monitored fractionation of methanol extracts of the fruit of Evodia rutaecarpa led to the isolation of quinolone alkaloids, evocarpin (1), 1-methyl-2-[(4Z,7Z)-4,7-tridecadienyl]-4(1H)-quinolone (2) and 1-methyl-2-[(6Z,9Z)-6,9-pentadecadienyl]-4(1H)-quinolone (3) as blockers of angiotensin II receptor binding with IC₅₀ values of 43.4 μM, 34.1 μM and 48.2 μM, respectively. © 1998 John Wiley & Sons, Ltd.     

An aqueous extract of Poncirus fructus activates the prokinetic activity of 5-HT receptor subtype 4 without hERG interaction

Aim of the study

Poncirus fructus (PF) - also known as the dried, immature fruit of Poncirus trifoliata (L.) Raf. (Rutaceae) - is a natural substance that has long been used for various gastrointestinal disorders in eastern Asia. An aqueous extract of PF (PF-W) has particularly potent gastroprokinetic effects, but its molecular mechanism was not well understood. Identification of the underlying prokinetic mechanism of PF-W was pursued in the present study.

Materials and methods

Changes in in vitro cAMP levels and in vivo intestinal transit rate (ITR) caused by PF-W were measured after pretreatment with GR125487, an antagonist for serotonin receptor subtype 4 (5-HT4R). An [³H] astemizole binding assay and electrophysiology experiments were performed to determine if PF-W has any interaction with the human ether-à-go-go related gene (hERG) potassium channel.

Results

PF-W induced an increase in intracellular cAMP in 5-HT4R-expressing HEK293T cells, indicating that PF-W does activate 5-HT4R. Moreover, pretreatment with GR125487 successfully blocked the increase, suggesting that the response was 5-HT4R-specific. More importantly, pretreatment of GR125487 in rats inhibited the elevation of ITR by PF-W, indicating that the prokinetic effect of PF-W was indeed exerted via 5-HT4R. On the other hand, both [³H]-astemizole binding assay and electrophysiological experiments revealed that PF-W did not interfere at all with the hERG channel.

Conclusion

It was found that PF-W exerts its prokinetic activity through a 5-HT4R-mediated pathway, with no interaction with hERG channels. Therefore, PF-W is a good candidate that might be developed as a prokinetic agent with fewer expected cardiac side effects.     

Inhibition of [3H]-LSD binding to 5-HT7 receptors by flavonoids from Scutellaria lateriflora

The hot water and 70% ethanol extracts of dried mad-dog skullcap (Scutellaria lateriflora) both bound to the 5-HT(7) receptor, with 87.2 +/- 6.2% and 56.7 +/- 1.3% inhibition of [(3)H]-LSD binding to the receptor at 100 microg/mL, respectively. The on-line analysis of a 70% ethanol extract by HPLC-UV/MS resulted in the identification of five flavones (1-5). Fractionation of the ethanol extract resulted in the isolation of three flavone-glucuronides (6-8) and a flavanone-glucuronide (9), including one new compound, lateriflorin (5,6,-dihydroxy-7-glucuronyloxy-2'-methoxyflavone) (8). The structure of 8 was determined by NMR ((1)H NMR, (13)C NMR, and NOESY experiments) and MS analysis. From the results obtained in the testing of the pure compounds, it is evident that the activity on the 5-HT(7) receptor is at least partly due to the presence of flavonoids. Scutellarin and ikonnikoside I showed the highest inhibition of [(3)H]-LSD binding with IC(50) values of 63.4 and 135.1 microM, respectively.     

New antiinfective and human 5-HT2 receptor binding natural and semisynthetic compounds from the Jamaican sponge Smenospongia aurea

In addition to the sesquiterpene-phenol aureols (1), 6'-chloroaureol (2), and aureol acetate (3), eight indole alkaloids including the new N-3'-ethylaplysinopsin (9) have been isolated from the Jamaican sponge Smenospongia aurea. Makaluvamine O (10), a new member of the pyrroloiminoquinone class, was also isolated. The structures were characterized by spectroscopic methods, and two new derivatives of aureol were prepared to optimize the biological activity. Aureol N,N-dimethyl thiocarbamate (1a) and 6-bromoaplysinopsin (7) exhibit significant antimalarial and antimycobacterial activity in vitro. Compound 6 showed activity against the Plasmodium enzyme plasmepsin II. The 6-bromo-2'-de-N-methylaplysinopsin (6), 6-bromoaplysinopsin (7), and N-3'-ethylaplysinopsin (9) displaced high-affinity [(3)H]antagonist ligands from cloned human serotonin 5-HT(2) receptor subtypes, whereas the other compounds tested did not. Remarkably, the 6-bromo-2'-de-N-methylaplysinopsin (6) showed a > 40-fold selectivity for the 5-HT(2C) subtype over the 5-HT(2A) subtype.     

Isolations of N-methyl-D-aspartic acid-type glutamate receptor ligands from Micronesian sponges

The bioassay-guided fractionation of the water-soluble extract of the marine sponge Cribrochalina olemda collected in Palau resulted in the isolation of a new amino acid cribronic acid (1): (2S,4R,5R)-5-hydroxy-4-sulfooxypiperidine-2-carboxylic acid. However, aqueous extracts of Stylotella aurantium and Axinella carteri collected in Yap State, Micronesia, afforded a known N-methyl-d-aspartic acid (NMDA)-type glutamate receptor agonist, (2S,4S)-4-sulfooxypiperidine-2-carboxylic acid (2), as a common active principle. Both 1 and 2 induced convulsive behaviors in mice upon intracerebroventricular (icv) injection with ED(50) values of 29 +/- 3.0 and 20 +/- 2.8 pmol/mouse, respectively. Radioligand binding assay using rat cerebrocortical membrane demonstrated that 1 and 2 inhibit the binding of the labeled NMDA receptor ligand [(3)H]CGP39653 at IC(50) values of 83 +/- 15 and 214 +/- 20 nM, respectively. However, 1 and 2 did not displace [(3)H]kainic acid or [(3)H]AMPA. These data indicated that 1 is a selective NMDA-type glutamate receptor ligand with potent convulsant activity in mice.     

Brominated cyclodipeptides from the marine sponge Geodia barretti as selective 5-HT ligands

The brominated cyclodipeptides barettin (cyclo[(6-bromo-8-entryptophan)arginine]) and 8,9-dihydrobarettin (cyclo[(6-bromotryptophan)arginine]) isolated from the marine sponge Geodia barretti have previously been shown to inhibit settlement of barnacle larvae in a dose-dependent manner in concentrations ranging from 0.5 to 25 microM. To further establish the molecular target and mode of action of these compounds, we investigated their affinity to human serotonin receptors. The tryptophan residue in the barettins resembles that of endogenous serotonin [5-hydroxytryptamine]. A selection of human serotonin receptors, including representatives from all subfamilies (1-7), were transfected into HEK-293 cells. Barettin selectively interacted with the serotonin receptors 5-HT2A, 5-HT2C, and 5-HT4 at concentrations close to that of endogenous serotonin, with the corresponding Ki values being 1.93, 0.34, and 1.91 microM, respectively. 8,9-Dihydrobarettin interacted exclusively with the 5-HT2C receptor with a Ki value of 4.63 microM; it failed to show affinity to 5-HT2A and 5-HT4, indicating that the double bond between the tryptophan and arginine residue plays an important role in the interaction with the receptor proteins.     

Grahamines A-E, cyclobutane-centered tropane alkaloids from the aerial parts of Schizanthus grahamii

Schizanthus grahamii is an endemic Chilean plant that is known to contain tropane alkaloids. Five new alkaloids, grahamines A-E (1-5), were isolated and characterized by extensive spectroscopic analysis. Their structures were determined to be 2-{[(3α-hydroxytropo-6β-yl)oxy]carbonyl}-2-methyl-3-{[((6β-angeloyloxy)-3α-yl)oxy]carbonyl}-4-phenylcyclobutanecarboxylic acid (1), 2-{[(3α-hydroxytropo-6β-yl)oxy]carbonyl}-2-methyl-3-{[((6β-tigloyloxy)-3α-yl)oxy]carbonyl}-4-phenylcyclobutanecarboxylic acid (2), 1-methyl-2-{[(3α-hydroxytropo-6β-yl)oxy]carbonyl}-4-{[((6β-angeloyloxy)-3α-yl)oxy]carbonyl}-3-phenylcyclobutanecarboxylic acid (3), 1,2-bis{[(3α-hydroxytropo-6β-yl)oxy]carbonyl}-2-methyl-3-{[((6β-angeloyloxy)-3α-yl)oxy]carbonyl}-4-phenylcyclobutanecarboxylate (4), and 1-{[(3α-mesaconyloxytropo-6β-yl)oxy]carbonyl}-2-{[(3α-hydroxytropo-6β-yl)oxy]carbonyl}-2-methyl-3-{[((6β-angeloyloxy)-3α-yl)oxy]carbonyl}-4-phenylcyclobutanecarboxylate (5).     

Anxiolytic-like effect of lavender essential oil inhalation in mice: Participation of serotonergic but not GABAA/benzodiazepine neurotransmission

Ethnopharmacological relevance

Lavandula angustifolia (lavender) inhalation has been used in folk medicine for the treatment of anxiety, and clinical and animal studies have corroborated its anxiolytic effect, although its mechanism of action is still not fully understood.

Aims of the study

The objective of the present study was to determine whether the GABA_A/benzodiazepine complex or serotonin neurotransmission mediates the anxiolytic-like effect of lavender essential oil.

Materials and methods

Male Swiss mice were subjected to the marble-burying test after being exposed to the aroma of lavender essential oil (1–5%), amyl acetate (5%; used as a behaviorally neutral odor), or distilled water for 15 min via inhalation. Additionally, the effect of 5% lavender essential oil was also evaluated in mice subjected to the elevated plus maze. GABA_A/benzodiazepine mediation was evaluated by pretreating the mice with the GABA_A receptor antagonist picrotoxin before the marble burying test and [³H]flunitrazepam binding to the benzodiazepine site on the GABA_A receptor. Serotonergic mediation was studied by pretreating the mice with O-methyl-[3H]-N-(2-[4-(2-methoxyphenyl)-1-piperazinyl]ethyl)-N-(2-pyridinyl) cyclohexanecarboxamide trihydrochloride (WAY100635), a serotonin 5-HT_1A receptor antagonist before the marble burying test. We also evaluated changes in the pharmacologically induced serotonin syndrome and the effects of combined administration of subeffective doses of lavender essential oil and the 5-HT_1A receptor agonist 8-hydroxy-2-(di-n-propylamino)tetralin (8-OH-DPAT).

Results

Lavender essential oil (1–5%) decreased the number of marbles buried compared with the control and amyl acetate groups. In the elevated plus maze, 5% lavender essential oil inhalation increased the percentage of time spent on and number of entries into the open arms compared with controls. No effect was seen in the number of closed arm entries or number of beam interruptions in the automated activity chamber. Pretreatment with the GABA_A receptor antagonist picrotoxin (0.5 mg/kg) did not modify the behavioral effect of 5% lavender essential oil in the marble-burying test. Lavender essential oil also did not alter [³H]flunitrazepam binding to the benzodiazepine site on the GABA_A receptor. Pretreatment with the serotonin 5-HT_1A receptor antagonist WAY100635 (3 mg/kg) blocked the anxiolytic-like effect of lavender essential oil and the 5-HT_1A receptor agonist 8-OH-DPAT (3 mg/kg). A combination of ineffective doses of 8-OH-DPAT (0.5 mg/kg) and lavender essential oil (0.1%) reduced the number of marbles buried. Finally, 5% lavender essential oil attenuated the serotonin syndrome induced by 40 mg/kg fluoxetine plus 80 mg/kg 5-hydroxytryptophan.

Conclusions

These results indicate an important role for the serotonergic system in the anxiolytic-like effect of lavender essential oil.     

Active components of ginger exhibiting anti-serotonergic action

The pharmacological effects of crude drugs and other plant extracts on the contractile responses to serotonin (5-HT) in isolated guinea pig ileum were examined. The acetone extract of giner was found to possess an anti-serotonergic effect. The extract was further fractionated by column chromatography and results showed that [6]-, [8]- and [10]-gingerol were the active components exhibiting anti-5-HT action.     

Sesquiterpenoids from Artemisia gilvescens and an anti-MRSA compound

A new secoguaianolide sesquiterpene (1) was isolated along with its three stereoisomers (2-4) from the nonmedicinal plant Artemisia gilvescens. The structure of 1 was elucidated to be (4S,5S)-dihydro-5-[(1R,2S)-2-hydroxy-2-methyl-5-oxo-3-cyclopenten-1-yl]-3-methylene-4-(3-oxobutyl)-2(3H)-furanone on the basis of 2D NMR and other spectroscopic evidence. Five known sesquiterpenoids were also isolated from this plant, and one of them (5) showed activity against methicillin-resistant Staphylococcus aureus (MRSA).     

The dermatitis-producing constituents of Euphorbia hermentiana latex

Five ingenane derivatives, 3-O-n-(deca-2,4,6-trienoyl)-16-O-[(Z)-2-methyl-2-butenoyl]-16-hydroxyingenol (1), 3-O-[(Z)-2-methyl-2-butenoyl]-5,16,20-O-triacetyl-16-hydroxyingenol (2), 3-O-[(Z)-2-methyl-2-butenoyl]-16,20-O-diacetyl-16-hydroxyingenol (3), 3-O-[(Z)-2-methyl-2-butenoyl]-20-O-acetylingenol (4), and 3-O-[(Z)-2-methyl-2-butenoyl]-16-O-acetyl-20-deoxy-16-hydroxyingenol (5) were isolated with a new procedure that uses droplet counter-current chromatography, from a dermatitis-producing fraction of the latex of Euphorbia hermentiana Lem. The structures of the new compounds 2,3, and 5 were established by the interpretation of their spectroscopic data and those of their hydrolytic and acetylated derivatives.     

Brain neurotransmitter receptor binding and nootropic studies on Indian Hypericum perforatum Linn

The high affinity binding sites for serotonin and benzodiazepine in the frontal cortex, for dopamine in the striatum and muscarinic cholinergic receptors in the hippocampus were investigated in the brains of Charles Foster rats treated for 3 days. Transfer latency on elevated plus maze (TL), passive and active avoidance behaviour (PA and AA) and electroconvulsive shock (ECS) induced amnesia were also studied. Pilot studies indicated that single dose administration of Indian Hypericum perforatum (IHp) had little or no acute behavioural effects and hence the extract of IHp was administered orally at two dose levels (100 and 200 mg/kg, p.o.) once daily for 3 consecutive days, while piracetam (500 mg/kg, i.p.), a clinically used nootropic agent, was administered acutely to rats as the standard nootropic agent. Control rats were treated with an equal volume of vehicle (0.3% carboxymethyl cellulose). The results indicate that IHp treatment caused a significant decrease in the binding of [3H] spiroperone (DA-D2 receptor) to the striatum and an increase in the binding of [3H] ketanserin (5-HT2A receptor) and [3H] flunitrazepam (BDZ receptor) to the frontal cortex in rats. Preliminary pharmacological studies with IHp extract indicate the presence of two major behavioural actions, namely, antidepressant and anxiolytic. The present findings tend to elucidate the mechanism of earlier observations, the downregulation of the dopamine D2 receptor being consonant with anxiolytic and the upregulation of 5-HT2A and BDZ receptors being consonant with antidepressant activity. Piracetam when given alone, shortened the TL on days 1, 2 and 9 day and also antagonized the amnesic effects of ECS on the TL significantly, whereas IHp antagonized the amnesia produced by ECS. IHp had no significant effect per se on the retention of the PA in rats but produced a significant reversal of ECS induced PA retention deficit. Piracetam showed a significant facilitatory effect per se on PA retention and also reversed the ECS induced impaired PA retention. In the AA test, piracetam facilitated the acquisition and retention of AA in rats but IHp had no effect per se. Both the doses of IHp and piracetam significantly attenuated the ECS induced impaired retention of AA. These results indicate a possible nootropic action of IHp in amnesic animals, which was comparable qualitatively to piracetam.     

Alkaloids from Eschscholzia californica and their capacity to inhibit binding of [3H]8-Hydroxy-2-(di-N-propylamino)tetralin to 5-HT1A receptors in Vitro

A 70% ethanol extract of California poppy (Eschscholzia californica) was able to bind to 5-HT(1A) and 5-HT(7) receptors at 100 mug/mL. The subsequent isolation procedure yielded the known alkaloids californidine (1), escholtzine (2), N-methyllaurotetanine (3), caryachine (4), and O-methylcaryachine (5), along with a new pavine alkaloid, 6S,12S-neocaryachine-7-O-methyl ether N-metho salt (7). The structure of 7 was determined by spectroscopic data interpretation, while the absolute stereochemistry was determined by means of circular dichroism. From the results obtained from the radioligand-binding assay of the pure compounds, including the commercially available protopine (6), it was evident that the activity on the 5-HT(1A) receptor was at least partly due to the presence of the aporphine alkaloid 3, which showed the highest inhibition of [(3)H]8-hydroxy-2-(di-N-propylamino)tetralin ([(3)H]8-OH-DPAT) binding with an EC(50) value of 155 nM and a K(i) of 85 nM.     

Inhibitory effect of compounds from Goniothalamus tapis Miq. and Goniothalamus uvaroides King on platelet-activating factor receptor binding

Phytochemical investigation on the bark of Goniothalamus tapis Miq. and G. uvaroides King has resulted in the isolation of eight styryl-lactones, (-)-cryptomeridiol, liriodenine, 3-methyl-1H-benz[f]indole-4,9-dione, (-)-stigmasterol and dimethyl terephthalate. The structures of the compounds were elucidated by spectroscopic techniques. The compounds were evaluated for their effect on platelet-activating factor (PAF) receptor binding on rabbit platelets using (3) H-PAF as a ligand. Among the compounds tested, (-)-cryptomeridiol, (+)-goniothalamin and (+)-isoaltholactone exhibited a significant and concentration-dependent inhibitory effect on PAF receptor binding, with inhibitory concentration (IC)(50) values of 17.5, 19.7 and 46.5 μm, respectively. The inhibitory effects of the first two compounds were comparable to that obtained from the positive control, cedrol. The results indicated that these compounds were strong PAF receptor binding inhibitors.     

In vitro pharmacological investigations of Sapindus trifoliatus in various migraine targets

Phytotherapies have offered alternative sources of therapy for migraine and gained much importance in prophylactic treatment. The aqueous extract of pericarp of fruits of Sapindus trifoliatus Linn (ST), family Sapindaceae was evaluated for its affinity for 5-HT(1B/1D) receptors in rabbit saphenous vein, alpha-adrenoceptors in rabbit aorta, GABA receptors in guinea pig ileum, 5-HT(2B) receptors in rat fundus and vanilloid receptors in guinea pig trachea. The calcium blocking effect was studied in rabbit aorta while the modulatory role of ST on platelet serotonin release was evaluated in human platelets. The aqueous extract of Sapindus trifoliatus exhibited significant 5-HT(2B) receptor inhibition and moderate platelet serotonin release inhibition.     

兰索拉唑有关物质的合成

 目的 为加强对兰索拉唑原料药和制剂产品的质量控制,合成存在于该药品中的3个有关物质。方法 以2-氯甲基-3-甲基-4-(2,2,2-三氟乙氧基)吡啶盐酸盐和2-巯基苯并咪唑为起始原料,用化学法合成2-{［3-甲基-4-(2,2,2-三氟乙氧基)-2-吡啶基］甲基硫代}-1H-苯并咪唑（1）,2-{［3-甲基-1-氧-4-(2,2,2-三氟乙氧基)-2-吡啶基］甲磺酰基}-1H-苯并咪唑（2）,2-{［3-甲基-4-(2,2,2-三氟乙氧基)-2-吡啶基］甲磺酰基}-1H-苯并咪唑（3）。结果 在甲醇钠的作用下起始原料经缩合得到（1）,收率97%。化合物1与两倍摩尔量的间氯过氧苯甲酸（m-CPBA）先在0 ℃下反应1 h,再在25 ℃下反应3 h氧化得到（2）,收率91％;化合物1与两倍摩尔量的m-CPBA在-15 ℃的作用下,氧化得到（3）,收率58％,本实验结果经质谱、核磁等确证。结论 本实验反应条件温和,原料易得,操作简单,收率高,同时由于溶剂和试剂单一,利于回收套用,降低成本,减少污染。     

基于小鼠异食癖模型的常山碱盐呕吐机制

目的:探究常山碱盐(dichroa alkali salt,DAS)诱导呕吐的可能机制。方法:采用小鼠异食癖模型,分别观察3种不同机制的镇吐药,多巴胺受体拮抗剂甲氧氯普胺,5-羟色胺3(5-hydroxytryptamine 3,5-HT_3)受体拮抗剂昂丹司琼,神经激肽-1受体拮抗剂阿瑞匹坦,对DAS所致小鼠体质量、正常饲料摄食量、高岭土摄食量及腹泻和死亡情况的影响,明确DAS可能的致吐途径;然后采用酶联免疫法针对性的检测DAS干预后不同时间点小鼠回肠和延髓中5-HT和P物质(substance P,SP)的表达情况,以确认DAS是否可影响这2种神经递质的变化。结果:配伍昂丹司琼和阿瑞匹坦后,连续给药第4天和药后第1天均可显著改善DAS诱导的小鼠摄食量降低现象(P 0. 01),自连续给药第3天起均可显著改善DAS诱导的小鼠体质量降低现象(P 0. 01),降低DAS诱导的小鼠腹泻率和死亡率,同时可有效拮抗DAS诱导的小鼠异食行为,但是甲氧氯普胺对上述指标则无明显改善作用;进一步检测呕吐相关神经递质,发现与空白组比较,给予DAS后4,12 h回肠和延髓中5-HT含量显著增加,48 h时回肠和延髓中SP含量显著升高。结论:小鼠异食模型可有效表征DAS诱导的呕吐现象,其诱导的呕吐行为可能与回肠和延髓中5-HT和SP含量升高有关,配伍昂丹司琼和阿瑞匹坦可有效拮抗DAS诱导的小鼠异食现象。     

番荔枝子中4个新的邻双四氢呋喃型番荔枝内酯

目的 研究番荔枝Annona squamosa种子的化学成分。方法 通过多种现代色谱技术对番荔枝子超临界CO₂提取物的化学成分进行分离纯化,并根据理化性质和谱学数据确定其结构。结果 从番荔枝子中分离得到7个化合物,分别鉴定为3-[12-[5-[5-(1-羟基十二烷基)-2-四氢呋喃基]-2-四氢呋喃基]-9,12-二羟基十二烷基]-5-甲基-2(5H)-呋喃酮（1）、3-[11-[5-[5-(1-羟基癸烷基)-2-四氢呋喃基]-2-四氢呋喃基]-8,11-二羟基十一烷基]-5-甲基-2(5H)-呋喃酮（2）、3-[9-[5-[5-(1,3-二羟基十四烷基)-2-四氢呋喃基]-2-四氢呋喃基]-9-羟基壬烷基]-5-甲基-2(5H)-呋喃酮（3）、3-[8-[5-[5-(1-羟基十四烷基)-2-四氢呋喃基]-2-四氢呋喃基]-2,8-二羟基辛烷基]-5-甲基-2(5H)-呋喃酮（4）、阿诺西林甲（5）、annosquacin A（6）和乙酰紫玉盘素（7）。结论 化合物1～4为4个未见报道的新邻双四氢呋喃型番荔枝内酯类化合物,分别命名为顺式-11-羟基鳞状辛素丙（1）、10-羟基鳞状辛素（2）、鳞状亭素戊（3）和鳞状亭素己（4）。