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Lipases catalyzed acetylation of meso-2,4-dimethyl-1,5-pentanediol and the synthesis of Prelog-Djerassi lactone

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Chinese Journal of Chemistry 1995年第4期13卷 380-384页

作者： lin, gq XU, WC CHINESE ACAD SCI SHANGHAI INST ORGAN CHEMSHANGHAI 200032PEOPLES R CHINA

Lipase catalyzed acetylation of 2 afforded 3 with the e.e. up to 98%. Utility of 3 was illustrated by the preparation of Prelog-Djerassi lactones 7a and 7b.

关键词： LIPASE (2R,4S)-5-ACETOXY-2,4-DIMETHYL-PENTANOL PRELOG-DJERASSI LACTONE

The Stereoselective Formal Synthesis of (-)-Slaframine

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Chinese Chemical Letters 1998年第11期9卷 999-0,0-0页

作者： Dong, HQ lin, gq Chinese Acad Sci Shanghai Inst Organ Chem Shanghai 200032 Peoples R China

The stereoselective synthesis of (-)-slaframine has been achieved by utilizing the Sharpless asymmetric epoxidation of divinylcarbinol (2) and the regio-selective dihydroxylation of compound 4 as the key steps.

关键词： (-)-slaframine divinylcarbinol Sharpless asymmetric epoxidation Sharpless asymmetric dihydroxylation

The Formal Stereoselective Synthesis of(+)-Preussin

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Chinese Chemical Letters 1997年第8期8卷 693-694页

作者： Dong, HQ lin, gq CHINESE ACAD SCI SHANGHAI INST ORGAN CHEMSHANGHAI 200032PEOPLES R CHINA

The stereoselective synthesis of (+)-preussin has been achieved by utilizing the Sharpless asymmetric epoxidation of the divinylcarbinol (3) and the oxidative cyclization of 9 with PDC as the key steps.

关键词： The Formal Stereoselective Synthesis of DMF 甲酰胺 Preussin

Microbial-chemical routes to R and S-denopamine a useful drug for congestive heart failure

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Chinese Journal of Chemistry 1995年第5期13卷 475-480页

作者： Gu, JX Li, ZY lin, gq CHINESE ACAD SCI SHANGHAI INST ORGAN CHEMSHANGHAI 200032PEOPLES R CHINA

Both enantiomers of denopamine were synthesized using microbial-chemical approach via bioreduction of 1-(acetoxyphenyl)ketone 4(R=CH2Cl) and 5(R=CO(2)Et) with fungus Geotrichum sp. G38.

关键词： denopamine bioreduction Geotrichum sp G38 asymmetric synthesis

Eremophilenolides from Cacalia Roborowskii

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Chinese Chemical Letters 1998年第1期9卷 65-68页

作者： Zhang, SM Zhao, GL lin, gq Chinese Acad Sci Shanghai Inst Organ Chem Shanghai 200032 Peoples R China

From the extracts of the roots of Cacalia roborowskii (Maxim) ling, five new eremophilenolides were isolated and their structures identified as 8 beta, 10 beta-dihydroxy-6 beta-methoxyleremophilenolide (1), 3 beta-acetoxyl-8 beta, 10 beta -dihydroxy-6 beta-methaxyeremophilenolide (2), 3 beta-angeloyloxy-8 beta-, 10 beta-dihydroxy-6 beta-methoxyeremophilenolide (3), 3 beta-(2-methylbutyryloxy)-8 beta, 10 beta-dihydroxy-6 beta-methoxyeremophilenolide (4), and 8 beta-hydroxy-6 beta-methoxyeremophil-7(11), 9-dien-8, 12-olide(5), based on 1D and 2D NMR experiments.

关键词： eremophilenolide root herb Cacalia roborowskii (maxim) ling

A New Approach to the Construction of Pyrrolizidine and Indolizidine Skeleton: Enantioselective Synthesis of (1S, 7aS)-1-hydroxypyrrolizidine and (1S, 8aS)-1-hydroxyindolizidine

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Chinese Chemical Letters 1997年第9期8卷 773-776页

作者： Dong, HQ Shi, ZC lin, gq CHINESE ACAD SCI SHANGHAI INST ORGAN CHEMSHANGHAI 200032PEOPLES R CHINA

A new approach to the construction of pyrrolizidine and indolizidine skeleton was described. By employing this cyclization method the synthesis of (1S. 7aS)-1-hydroxypyrrolizidine (1a) and (1S. 8aS)-1-hydroxyindolizidine (1b) was achieved by treatment of the trimesylate 6a or 6b with aqueous ammonia in the presence of KaCO(3) (or Cs2CO3) in one-pot fashion.

关键词： ppm HRMS A New Approach to the Construction of Pyrrolizidine and Indolizidine Skeleton hydroxyindolizidine hydroxypyrrolizidine and Enantioselective Synthesis of

Eremophilane Sesquiterpenes from Cacalia Roborowskii

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Chinese Chemical Letters 1998年第1期9卷 61-64页

作者： Zhang, SM Zhao, GL Li, R lin, gq Chinese Acad Sci Shanghai Inst Organ Chem Shanghai 200032 Peoples R China

Four new eremophilane type sesquiterpenes were isolated from the roots of Cacalia roborowskii (Maxim) ling. Their structures were established as 8-oxo-eremophila-6, 9-dien-12-oic acid (1), 3 beta-acetoxyl-8-oxo-eremophila-6, 9-dien-12-oic acid (2), 3 beta-angeloyoxyl-8-oxo-eremophilad, 9-dien-12-oic acid (3) and 3 beta-(2-methylbutyryloxyl)-8-oxo-eremophilia-6,9-dien-12-oic acid (4) by means of 1D and 2D NMR spectroscopy.

关键词： eremophilane sesquiterpene Cacalia roborowskii

Electron Gun for SSRF

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Electron Gun for SSRF

超早期选择性动脉溶栓治疗急性缺血性脑卒中13例

The Second Asian Particle Accelerator Conference

作者： S.G Shcng gq. lin Q. Gu D.M. LiShanghai National Synchrotron Radiation China

＜正＞ A 100KV triode-electron-gun has been designed and manufactured for the linac of ShanghaiSynchrotron Radiation Facility（SSRF）.This gun is able to generate two different electronbeams,the 1ns（FWHM）,2A（peak）single bunch and the 300nsec（macro-pulse width）,300mA（average）multi-bunch train modulated by 500MHz,to meet the requirement of two

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新乡医学院学报 2002年第6期19卷 496-497页

作者：宋伟蔺志清夏国庆燕燕焦作市第二医院神经外科河南焦作454100

目的　探讨超早期选择性动脉溶栓治疗对急性缺血性脑卒中的效果。方法　 13例急性缺血性脑卒中患者均在起病 1～ 6h内行脑血管造影 ,对靶血管闭塞点或患侧颈内动脉进行溶栓治疗。结果　颈内动脉闭塞 4例中 ,2例完全再通 ,2例部分再通 ;... 详细信息

目的　探讨超早期选择性动脉溶栓治疗对急性缺血性脑卒中的效果。方法　 13例急性缺血性脑卒中患者均在起病 1～ 6h内行脑血管造影 ,对靶血管闭塞点或患侧颈内动脉进行溶栓治疗。结果　颈内动脉闭塞 4例中 ,2例完全再通 ,2例部分再通 ;大脑前动脉闭塞 2例 ,均再通 ;大脑中动脉闭塞 7例中 ,5例完全再通 ,2例部分再通。结论　超早期选择性动脉溶栓治疗急性缺血性脑卒中效果明显 ,并发症少。

关键词：治疗超早期动脉溶栓缺血性脑卒中病例分析