用二维核磁共振技术研究赤芝孢子内酯A和B的结构

通过¹H-¹H,¹H-¹³C相关谱(COSY),¹H-¹³C远程偶合相关谱(OOLOC)及NOE二维谱(NOESY)等新的二维核磁共振技术确定了两个新化合物赤芝孢子内酯A和B的结构。     

银袋内酯丁的结构

从变色马兜铃中分离得一双缩倍半萜内酯,银袋内酯丁(versicolactone D,B₁),经IR,UV,MS,¹HNMR,¹³CNMR,¹H-H COSY,¹³C-¹H COSY和X-ray衍射等确定系一新型骨架的化合物。     

雷公藤中的二萜内酯类成分

目的研究雷公藤(Tripterygium wilfordii Hook.F.)的化学成分。方法应用各种色谱技术进行分离纯化，用UV，IR，¹H NMR，MS，HRMS，¹H-¹H COSY，¹H-¹³C COSY和NOESY等光谱鉴定化合物的结构。结果共分离得到4个化合物：I为16-羟基雷公藤内酯醇(16-hydroxytriptolide)，II为15-羟基雷公藤内酯醇(雷醇内酯，triptolidenol)，III为雷公藤乙素(tripdiolide)，IV为雷公藤乙素的差向异构体，命名为2-表雷公藤乙素(2-epitripdiolide)。结论化合物IV为新二萜内酯化合物。     

用二维核磁共振技术研究野菊花三醇的结构

从野菊花(Chrysanthemum indicum L.)亲脂性极性较大的部分,分离得到一个新的倍半萜成分,命名为野菊花三醇。通过¹H-¹H COSY,¹H-¹³C COSY及远程¹H-¹³C COSY二维核磁共振谱研究,确定其属于(牛龙)牛儿烷衍生物,并确定其结构和相对立体构型。     

用二维核磁共振法研究肿足蕨碱的结构

从金星蕨科植物山东肿足蕨(Hypodematium sinense Iwatsuki)的全草分得一种新化合物,通过¹H-¹H COSY谱,¹H-¹³C COSY谱和远程¹H-¹³C COSY谱确定其结构是一种具有苯基取代苯并氮杂环辛四烯新型骨架的生物碱,命名为肿足蕨碱(hypodematine)(Ⅰ)。     

免疫抑制成分异雷公藤春碱的分离与结构

从雷公藤(Tripterygium wilfordii Hook.f.)根皮中分离到一种倍半萜生物碱，根据理化性质和光谱(UV，TR，Ms，HRMs，¹HNMR，¹³CNMR．¹H-¹H COSY，¹H-¹³C COSY．2D-NOESY，¹H-¹³C COLOC)数据解析，鉴定为一种新的生物碱，命名为异雷公藤春碱嘛(isowilfortrine)。药理实验证明该生物碱有免疫抑制活性．并发现对白血病细响有抑制作用。     

雷公藤榕碱的结构与分离

目的研究雷公藤(Tripterygium wilfordii Hook.f.)的化学成分。方法应用各种色谱技术进行分离纯化,用UV,IR,MS,HRMS,¹HNMR,¹³CNMR(COM和OFR),¹H-¹H COSY,¹H-¹³C COSY,2D-NOESY,¹H-¹³C COLOC鉴定化合物的结构。结果分离并鉴定了2个生物碱:I为wilforgine,II为雷公藤榕碱(wilfordlongine)。结论化合物II为一种新的倍半萜生物碱。     

中国羊踯躅花化学成分研究

从国产杜鹃花科植物羊踯躅(Rhododendron molle G.Don)的花中分离得到两种有药理活性的成分。经光谱(IR,MS,¹HNMR,¹³CNMR,¹H-¹H COSY,¹H-¹H NOESY,¹³C-¹H COSY)等分析证明其中一种为新的四环二萜类化合物。命名为羊踯躅素Ⅲ(rhodomollein Ⅲ)(1)。     

路路通内酯的化学结构

用红外,质谱,¹H,¹³CNMR和¹H-¹³CCOLOC等光谱解析,确定了新化合物路路通内酯的结构为3-羰基-11α,12α-环氧-13β-氧-齐墩果-28β-酸-13,28-γ-内酯,命名为路路通内酯。     

变色马兜铃中银袋内酯乙、丙的结构测定

从变色马兜铃(Aristolochia versicolar S M Hwang)的块根中分离到两个新倍半萜内酯,分别命名为银袋内酯乙(versicolactone B)和银袋内酯丙(versicolactone C)。前者分子式C₁₅H₂₀O₃,熔点135～136℃;后者分子式C₁₅H₂₂O₄,熔点181～182℃,[α]_D³⁶—11.4°(C,2.6,EtOH)。经光谱(UV,IR,¹H NMR,¹³SCNMR,MS)分析和化学方法证明,并经x-衍射证实,两者的结构分别为(Ⅰ)和(Ⅲ)。银袋内酯丙系一新型骨架的奠类倍半萜内酯。     

雷公藤倍半萜生物碱的研究

目的　研究雷公藤(Tripterygium wilfordii Hook.f.)的化学成分。方法　应用各种色谱技术进行分离纯化,用UV,IR,MS,HRMS,¹HNMR,¹³CNMR(COM和OFR),¹H-¹HCOSY,¹H-¹³CCOSY,2D-NOESY,¹H-¹³CCOLOC鉴定化合物。并进行初步的药理实验。结果　分离并鉴定了2个生物碱：euonine(I)和雷公藤康碱(IIwilfordconine)。结论　II为一种新的倍半萜生物碱,药理实验证明该生物碱有免疫抑制活性,并对白血病细胞有抑制作用。     

Novel antitumor antibiotic phospholine. 2. Structure determination

Phospholine, an antitumor antibiotic, has the molecular formula of C25H40NO8P and possesses a delta-lactone and a phosphoric acid ester as functional groups. Its structure was determined based on interpretation of fast atom bombardment MS, 1H NMR, 13C NMR, 1H-1H correlation spectroscopy (COSY), 13C-1H COSY, heteronuclear multiple bond correlation spectroscopy, elemental analysis and chemical modifications.     

Terpenoid constituents of Aster subspicatus and A. ageratoides

Chemical investigation of the aerial parts of Aster subspicatus afforded a new sesquiterpene lactone, 8 alpha-acetoxy-1 alpha-hydroxy-3 alpha,4 alpha-epoxy-5 alpha,7 alpha H-9,11(13)-guaiadien-12,6 alpha-olide (1), in addition to the known compounds arteglasin-B (2), diversoside (3), and 2-phenylethyl beta-D-glucopyranoside. Re-investigation of Aster ageratoides afforded the known compounds crotocorylifuran, and oplopanone. The structure of the new compound was determined by spectroscopic methods particularly high resolution 1H, 13C NMR, DEPT, 2D 1H-1H and 1H-13C COSY NMR and HMBC analysis.     

Epiderstatin, a new inhibitor of the mitogenic activity induced by epidermal growth factor. II. Structure elucidation

The structure of a novel antibiotic, epiderstatin, was determined as 4-[3-((Z)-3,5-dimethyl-2-oxopiperidin-6-ylidene)-2-oxopropyl]-2, 6-piperidinedione by spectroscopic analyses of 1H NMR, 13C NMR, 1H-1H correlation spectroscopy (COSY), 13C-1H COSY, heteronuclear multiple bond correlation spectroscopy, UV and IR spectra. The antibiotic belongs to the glutarimide antibiotics, however, the characteristic feature of epiderstatin is that it has a piperidone ring instead of a cyclohexanone ring.     

用二维核磁共振技术研究赤芝孢子内酯A和B的结构

通过~1H-~1H,~1H-~(13)C相关谱(COSY),~1H-~(13)C远程偶合相关谱(OOLOC)及NOE二维谱(NOESY)等新的二维核磁共振技术确定了两个新化合物赤芝孢子内酯A和B的结构。     

用二维核磁共振法研究肿足蕨碱的结构

从金星蕨科植物山东肿足蕨Hypodematium sinense Iwatsuki的全草分得一种新化合物，通过^1H-^1H COSY谱，^1H-^13C COSY谱和远程^1H-^13C COSY谱确定其结构是一种具有苯基取代苯并氮杂环辛四烯新型骨架的生物碱，命名为肿足蕨碱Hypodematine(Ⅰ）。     

Dioxamycin, a new benz[a]anthraquinone antibiotic

A new antibiotic, dioxamycin (1) was isolated from the culture broth of the strain MH406-SF1, which was closely related to Streptomyces xantholiticus. This antibiotic was purified by countercurrent chromatography, column chromatography and preparative HPLC. The molecular formula of 1 was determined to be C38H40O15 by HRFAB-MS. The structure was determined by spectral analysis of 2D NMR; 1H-1H COSY, 13C-1H COSY, long range 13C-1H COSY (HMBC) and NOESY. The antibiotic is active in vitro against Gram-positive bacteria and some tumor cells. Dioxamycin is a benz[a]anthraquinone antibiotic related to capoamycin.