滇产苦绳甾体成分的研究

从滇产苦绳(Dregea sinensis var.corrrugata)的根茎中分得两个新的C₂₁-甾体甙元,命名为苦绳甙元Ⅰ及Ⅱ(drevogenin Ⅰ,Ⅱ),经光谱分析和化学反应证明,甙元Ⅰ的结构为C/D顺式5α-H,3β,8β,14β,17β四羟基-12β-O-异戊酰基-20-O-异戊酰基娠烷(C/D cis 5α-H,3β,8β,14β,17βtetrahydroxy一12β-O-isovaleryl-20-O-isovaleryl-pregnane)。甙元Ⅱ的结构为C/D顺式5α-H,3β-14β,17β三羟基-12-β-O-乙酰基-20-O-苯甲酰基娠烷(C/Dcis 5α-H,3β,14β,17βtrihydroxy-12β-O-acetyl-20-0-benzoyl-pregnane)。     

苦绳二糖甙的结构研究

从苦绳(Dregea sinensis var.corrugata)的根茎中分得一个新的二糖甙,命名为苦绳甙乙(dregeoside B,Ⅰ),经光谱分析和化学反应证明其结构为12,20-二-O-异戊酰基托曼托甙元-3-O-α-L-夹竹桃吡喃糖-(1→4)-O-α-L-夹竹桃吡喃糖甙(12,20-di-O-isovaleryltomentogenin-3-O-α-L-oleandropyranosyl-(1→4)-O-α-L-oleandropyranoside)。     

云南白珠属植物精油及其利用研究

地檀香、滇白珠、高山地檀香系杜鹃花科(Ericaceae)白珠属(Gaultheria L.)植物。广泛分布于我国西南和中南各省。据我所调查,云南约有18种和6个变种。地檀香(G.forrestii Diels),滇白珠[G.yunnanensis(Franch.)Rehd.],高山地檀香(G.griffithianaWight)在云南分布甚广,藏量很大。该三种植物的化学研究尚未见有报导。同属多种植物的叶精油,经前人研究确定,其主要成分为水杨酸甲酯(methyl salicylate),含量达96—99％。这种精油的商品名通称为冬绿油(wintergreen oils),广泛用于医药与香料工业。上述三种植物的新鲜枝叶,以水蒸气蒸馏所得精油,呈淡黄色至赤红色,出油率0.5—     

思茅藤甙类成分研究*

从思茅藤[Epigynun auritum(schneid.)Tsiang et P.T.Li]的茎皮中分离到胡萝卜甙(daucosterol)(Ⅰ)和一个新化合物(Ⅱ),命名为思茅藤甙(epigeoside)。经光谱分析和化学反应证明,Ⅱ的结构为儿茶素-3-O-α-L-鼠李吡喃糖(1→4)-β-D-葡萄吡喃糖(1→6)-β-D-葡萄吡喃糖甙[catechin-3-O-α-L-rhamnopyranosyl-(1→4)-β-D-glucopyranosyl-(1→6)-β-D-glucopyranoside]。     

云南白珠属植物精油及其利用研究

Within the Genus gaultheria L., G. forrestii Diels, G.yunnanensis (Franch.) Rehd.and G. griffithiana Wight are the most widely distributed species in Yunnan. The essential oils derived from them mainly consist of methyl salicylate, and the contents amount to 94—99%. When we undertook the synthesis of 3,3-methylene bis-(4-h)hydroxycoumarin) from methyl salicylate by M.A.Stahman's procedure, we found that during the step of forma- tion of 4-hydroxycoumarin by treating methyl acetyl salicylate with metallic sodium, it would be better to use a ratio of the ester and sodium at ten to one by weight; the reacting temperature was controlled within a range at 180—200℃, and the reaction was prolonged about two hours. By so doing, the yield of 4-hydroxycoumarin was raised from Stahman's 22% to a new leval of 30—31%.     

筒鞘蛇菰的化学成分(Ⅰ)

从筒鞘蛇菰的乙醇提取物中分离并鉴定了4个化合物，即松柏甙（coniferin，Ⅰ），甲基松柏式（methylconiferin,Ⅱ），β－谷甾醇（Ⅲ）和乙酸羽扇豆醇酯（lupeolacetateⅣ），其中Ⅱ为新化合物。     

青羊参的中枢药理作用研究

青羊参(Cynanchum Otophyllum Schnied),又称青阳参、白石参、毒狗药等,是萝摩科(AS-C1 epiadaceae)鹅绒藤属(Cynachum Linn)的植物,产于云南海拔2400～2700米的山区。根茎入药,性味甘辛温,能补肾虚,治癫痫、头昏、心悸、小儿惊风和风湿性关节炎等。近来有人证明其氯仿提取物对     

青阳参化学成分的研究

昆明产的青阳参(Cynonchum otophyllum Schneid.)经药理和临床实验证明,对癫痫和迁慢性肝炎有较好的疗效。本文报道从青阳参根中分得两种甾体酯甙元和一个去氧糖,分别鉴定为告达亭(caudatin Ⅰ),青阳参甙元(qingyangshengenin Ⅱ)和地芰糖(digitoxose Ⅲ),其中Ⅱ为新化合物。     

青阳参治疗癫痫大发作——附动物实验观察

癫痫患者约占总人口的3～6‰,虽然近代在抗惊厥药物的研究方面获得很大进展,但仍约有20～30%的患者难以用现有的药物控制。因此,我们试图从中草药中寻找新的药物,以求获得满意的疗效。     

TREATMENT OF GRAND MAL SEIZURES WITH“QINGYANGSHEN”(ROOT OF CYNANCHUM OTOPHYLLUM)AND OBSERVATIONS ON EXPERIMENTAL ANIMALS

In a clinical investigation on 32 patientswith only grand mal seizures,all of whomshowed unsatisfactory response to conventionalantiepileptic treatment,“Qingyangshen” (青阳参root of Cynanchum otophyllum Schneid.),wasgiven in addition to the antiepileptic drugs used.After a course of 2-9 months' treatment,seizureswere basically controlled in 9 cases.Reduction in seizure frequency was betterthan 50% in 20 cases,while in the other 3 it