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Triterpenoids from Fuscoporia obliqua

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Chinese Chemical Letters 2000年第1期11卷 45-48页

作者： Jian HE Xiao zhang FENG Bin ZHAO Yang LU (Institute of Materia medica, Chinese Academy of medical Sciences and Peking Union medical college,1 Xian Nong Tan Street, beijing 100050) Chinese Acad med Sci Inst Mat Med Beijing 100050 Peoples R China Peking Union med coll Beijing 100050 Peoples R China

Two new lanosta triterpenoids, 3 beta,22 a -dihydroxy-lanosta-8,24E-diene-25-peroxide 3 beta,22 a,25-trihydroxy lanosta-8,24E-diene were isolated from the petroleum ether extracts of Fuscoporia obliqua and their struc... 详细信息

关键词： Fuscoporia obliqua Polyporaceae fungi triterpeneperoxide 3 beta,22 alpha-dihydroxy-lanosta-8,24E-ene-25-peroxide 3 beta,22 alpha,25-trihydroxy-lanosta-8,24E-diene

Studies on the Total Synthesis of Hainanolide (VI)-The First Access to the Lactone Functionality

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Chinese Chemical Letters 2000年第4期11卷 295-296页

作者： Xiao Ming YU Shi Zhi CHEN Liang HUANG (Institute of Materia medica. Chinese Academy of medical Sciences & Peking Union medical college. No. 1 Xian Nong Tan Street. beijing 100050) Chinese Acad med Sci Inst Mat Med Beijing 100050 Peoples R China Peking Union med coll Beijing 100050 Peoples R China

C-2a- beta-H ketone 6 was synthesized from the exo-IMDA-additive 4 with the aid of singlet oxygen, and ring E of hainanolide was assembled via kinetic enol ether of 6.

关键词： hainanolide exo-IMDA-additive 1,4-lactone

EPImedOKOREANONE A FROM THE AERIAL PARTS O FEPImedIUM KOREANUM NAKAI

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Chinese Chemical Letters 1996年第1期7卷 23-24页

作者： Li, WK Yang, JS Xiao, PG Pan, JQ Lu, MJ Zhang, RY CHINESE ACAD med SCI INST MED PLANT DEVBEIJING 100094PEOPLES R CHINA beijing UNION med coll BEIJING 100094PEOPLES R CHINA beijing UNIV DEPT CHEMBEIJING 100871PEOPLES R CHINA beijing med UNIV SCH PHARMACEUT SCIBEIJING 100083PEOPLES R CHINA

A new alpha-pyrone derivative, epimedokoreanone A was isolated from the aerial parts of Epimedium koreanum Nakai. Its structure was determined by spectroscopic methods (IR, MS, H-1 NMR, C-13 NMR, DEPT, H-1-C-13 COSY a...

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Reactivity of C-10 Function in Sinenxan A and Its Derivatives

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Chinese Chemical Letters 1997年第12期8卷 0-0,0-0页

作者： Fen Mei YAO Dong Hui WANG Guang Yan HUANG Ji Yu GUO Xiao Tian LIANG(Institute of Materia medica, Chinese Academy of medical Sciences & Peking Union Modical college, beijing 100050,China) Chinese Acad med Sci Inst Mat Med Beijing 100050 Peoples R China Peking Union med coll Beijing 100050 Peoples R China

The allylic nature of C-10 in sinenxan A (1) leads to facile SN1 and eliminion reactions

关键词： Reactivity of C-10 Function in Sinenxan A and Its Derivatives

Intramolecular Induction of Asymmetric Darzen's Condensation of Aldehydes with Chiral α-Chloroacetates

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Chinese Chemical Letters 1999年第6期10卷 441-442页

作者： Guo Bin HUANG Gan Feng CAO Ke Met WU Liang HUANG(Institute of Materia medica. Chinese Academy of medical Sciences & Peking Union medical college.Xian Nong Tan Street. beijing 100050) Chinese Acad med Sci Inst Mat Med Beijing 100050 Peoples R China Peking Union med coll Beijing 100050 Peoples R China

The asymmetric Darzen's condensation of aldehydes with a-chloroacetates of somenaturally occurring or synthetic chiral alcohols was described. The de% of products fell over therange of 4. 78% to 99%.

关键词： Asymmetric Darzen's condensation chiral α-chloroacetates

Selective Cyclooxygenase-2 Inhibitors: Design and Synthesis

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Chinese Chemical Letters 1999年第6期10卷 469-472页

作者： Xin Sheng LEI Zong Ru GUO Ling Bo QU Qi Qing ZHU(Institute of Materia medica. Chinese Academy of medical SciencesAnd Peking Union medical college. beijing 100050) Chinese Acad med Sci Inst Mat Med Beijing 100050 Peoples R China Peking Union med coll Beijing 100050 Peoples R China

The discovery of COX-2 provides a novel target developing more effective NSAIDs with fewer side effects. On the basis of results from the structure-activity relationships (SAR) of selective COX-2 inhibitors, we have d... 详细信息

关键词： cyclooxygenase cyclooxygenase-2 inhibitor selective

Surgical procedure determination based ontumor-node-metastasis staging of gallbladder cancer

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World Journal of Gastroenterology 2015年第15期21卷 4627-4634页

作者： He, Xiao-Dong Li, Jing-Jing Liu, Wei Qu, Qiang Hong, Tao Xu, Xie-Qun Li, Bing-Lu Wang, Ying Zhao, Hai-Tao Chinese Acad med Sci Dept Gen Surg Peking Union Med Coll Hosp Beijing 100730 Peoples R China Peking Union med coll Beijing 100730 Peoples R China Chinese Acad med Sci Dept Liver Surg Peking Union Med Coll Hosp Beijing 100730 Peoples R China

AIM: To investigate the impact of surgical procedures on prognosis of gallbladder cancer patients classified with the latest tumor-node-metastasis(TNM) staging ***: A retrospective study was performed by reviewing 152 patients with primary gallbladder carcinoma treated at Peking Union medical college Hospital from January 2003 to June 2013. Postsurgical follow-up was performed by telephone and outpatient visits. Clinical records were reviewed and patients were grouped based on the new edition of TNM staging system(AJCC, seventh edition, 2010). Prognoses were analyzed and compared based on surgical operations including simple cholecystectomy, radical cholecystectomy(or extended radical cholecystectomy), and palliative surgery. Simple cholecystectomy is, by definition, resection of the gallbladder fossa. Radical cholecystectomy involves a wedge resection of the gallbladder fossa with 2 cm nonneoplastic liver tissue; resection of a suprapancreatic segment of the extrahepatic bile duct and extended portal lymph node dissection may also be considered based on the patient's circumstance. Palliative surgery refers to cholecystectomy with biliary drainage. Data analysis was performed with SPSS 19.0 software. KaplanMeier survival analysis and Logrank test were used for survival rate comparison. P med on 28 cases, radical cholecystectomy or expanded gallbladder radical resection on 57 cases, and palliative resection on 28 cases. Thirty-nine cases were not operated. Patients with stages 0 and Ⅰ disease demonstrated no statistical significant difference in survival time between those receiving radical cholecystectomy and simple cholecystectomy(P = 0.

关键词： Gallbladder cancer Simple cholecystectomy Tumor-node-metastasis staging Radical cholecystectomy Prognosis

MURICATALIN, A NEW POLYKETIDE FROM ANNONA MURICATA (ANNONACEAE)

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Chinese Chemical Letters 1995年第1期6卷 45-48页

作者： Hua Qing GUI jing Guang YU and Zhi Li YU￣aInstitute of medicinal plant Development, Chinese Academy of medical Sciences and Peking Union medical college. beijing 100O94 Chinese Acad med Sci Inst Med Plant Dev Beijing 100094 Peoples R China beijing Union med coll Beijing 100094 Peoples R China

Muricatalin (1), a new polyketide (acetogenin) has been isolated from Annona muricata L. Its structure and relative stereochemistry were elucidated on the basis of the spectral analyses of 1 and its derivatives, the a...

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A new lathyrane diterpene glycoside from Euphorbia helioscopia L.

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Chinese Chemical Letters 2010年第2期21卷 191-193页

作者： Feng, Wei Sheng Gao, Li Zheng, Xiao Ke Wang, Yan Zhi Chen, Hui Henan coll Tradit Chinese med Zhengzhou 450008 Peoples R China Chinese Acad med Sci Beijing 100050 Peoples R China Peking Union med coll Inst Mat Med Beijing 100050 Peoples R China

A new lathyrane diterpene glycoside,named 3β,7β,15β-trihydroxy-14-oxolathyra-5E,12E-dienyl-16-O-β-D-glucopyranoside, was isolated from Euphorbia helioscopia *** structure was established by spectroscopic technique... 详细信息

关键词： Euphorbia Euphorbia helioscopia L. Lathyrane diterpene glycoside