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Melaxillarinine, a New Bisindole Alkaloid from Melodinus axillaris

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Chinese Chemical Letters 1997年第4期8卷 313-314页

作者： Yan, KX Feng, XZ CHINESE ACAD med SCI INST MAT MEDBEIJING 100050PEOPLES R CHINA beijing UNION med coll BEIJING 100050PEOPLES R CHINA

A new bisindole alkaloid, melaxillarinine, was isolated from the roots of Melodinus axillaris. Its structure was established on the basis of spectral analysis.

关键词： Cl Melaxillarinine a New Bisindole Alkaloid from Melodinus axillaris

Absolute Configurations of Tonkinin A and B: Two New Acetogenins from Uvaria Tonkinensis

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Chinese Chemical Letters 1997年第9期8卷 789-790页

作者： Chen, Y Yu, DQ CHINESE ACAD med SCI INST MAT MEDBEIJING 100050PEOPLES R CHINA beijing UNION med coll BEIJING 100050PEOPLES R CHINA

The absolute stereochemistries of Annonaceous acetogenins, tonkinin A and B, have been established by the use of the convenient conversion to their formaldehyde acetal derivatives and the subsequent application of the... 详细信息

关键词： Chen Absolute Configurations of Tonkinin A and B

Total Synthesis of Antitumor constituent Howiinol A

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Chinese Chemical Letters 1997年第4期8卷 293-294页

作者： Sun, SY Yu, DQ CHINESE ACAD med SCI INST MAT MEDBEIJING 100050PEOPLES R CHINA beijing UNION med coll BEIJING 100050PEOPLES R CHINA

Howiinol A, an active antitumor constituent from the root and stem bark of Goniothamus howii Meer. (Annoaceae) has been synthesized in nine steps from alpha - D - glucoheptonic gamma - lactone with an overall yield of... 详细信息

关键词： THF Total Synthesis of Antitumor constituent Howiinol A

Subvellerolactone　C，　a　New　Lactarane　Sesquiterpene　from　Lactarius　Subvellereus

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Chinese Chemical Letters 1996年第12期7卷 1097-1099页

作者： Zhang, J Feng, XZ CHINESE ACAD med SCI INST MAT MEDBEIJING 100050PEOPLES R CHINA beijing UNION med coll BEIJING 100050PEOPLES R CHINA

Subvellerolactone C(I), a new 3, 8-oxa-13-hydroxy-1 acrar-6-en-5-oic acid γ-lactone was isolated from the fruit bodies of Lactarius subvellereus (Russulaceae), and its structure was elucidated by means of spectroscop... 详细信息

关键词： Subvellereus Lactarius New Sesquiterpene Lactarane

Reversed－Phase　High－Performance　Liquid　　Chromatographic　Determination　of　Drugs　of　Abuse

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Chinese Chemical Letters 1996年第11期7卷 1027-1028页

作者： Ma, C Duan, HJ Xu, YQ Zhou, TH CHINESE ACAD med SCI INST MAT MEDBEIJING 100050PEOPLES R CHINA beijing UNION med coll BEIJING 100050PEOPLES R CHINA

A high-performance liquid chromatographic method using uv detection for thedetermination of 10 drugs of abuse is described. The method is sample and sensitive. The linear rangesare 20￣100ng/ml with relative standard ... 详细信息

关键词： Determination Drugs Abuse Chromatographic

Total Synthesis of dl-Ligustiphenol

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Chinese Chemical Letters 1996年第10期7卷 896-897页

作者： Huang, YH Yu, DQ CHINESE ACAD med SCI INST MAT MEDBEIJING 100050PEOPLES R CHINA beijing UNION med coll BEIJING 100050PEOPLES R CHINA

----(-)S-Ligustiphenol is a new sesquiterpene compound with antiinflammatory and immunosuppressive activities. The total synthesis of its racemate was carried out by a six-step reaction sequence including bromination of aldehyde, iodination of m-cresol, protection of phenolic hydroxyl, Grignard reaction,aldol condensation, etc. The target compound was characterized by comparing its H-1 NMR,MS and IR spectra with natural (-) ligustiphenol.

关键词： Total Synthesis of dl-Ligustiphenol

Taxuchin B,a New Chlorine-Containing Taxoid

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Chinese Chemical Letters 1997年第3期8卷 231-232页

作者： Fang, WS Fang, QC Liang, XT Lu, Y Wu, N Zheng, QT CHINESE ACAD med SCI INST MAT MEDBEIJING 100050PEOPLES R CHINA beijing UNION med coll BEIJING 100050PEOPLES R CHINA

A new taxoid, taxuchin B[1], has been isolated from twigs and needles of Taxus chinensis. It is the first chlorine-containing taxoid reported to date.

关键词： Zhang Chen

New Pyrones from Hypericum Japonicum

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Chinese Chemical Letters 1996年第12期7卷 1095-1096页

作者： Wu, QL Liao, YH Wang, SP Wang, LW Feng, YX Yang, JS Xiao, PG Hong, SL CHINESE ACAD med SCI INST MED PLANT DEVBEIJING 100094PEOPLES R CHINA beijing UNION med coll BEIJING 100094PEOPLES R CHINA

From the aerial part of Hypericum japonicum Thunb. ex Murray, two new pyrones, japonicumone-A and -B, were isolated and their structures were determined on basis of spectroscopic evidence.

关键词： New Pyrones from Hypericum Japonicum

Dynamical framework with blocking topography coordinates for atmospheric GCM and its validation

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Chinese Science Bulletin 2003年第S2期48卷 9-17页

作者： LIN Zhaohui~1, ZHANG Ming~(1,2), LIANG Danqing~(1,2) WANG Aihui~1, ZHANG Dongling~1 & ZENG Qingcun~1 1. ICCES, Institute of Atmospheric Physics, Chinese Academy of Sciences. beijing 100029. China 2. college of Meteorology. pla University of Science and Technology, Nanjing 211101. China Chinese Acad Sci Inst Atmospher Phys ICCES Beijing 100029 Peoples R China pla Univ Sci & Technol Coll Meteor PLA Nanjing 211101 Peoples R China

The dynamical framework with Blocking To-pography Coordinates (hereafter, BTC), which is suited tohandle the steep topography for the atmospheric generalcirculation models, is presented in this paper, together withits validation results. The integral properties of both the dif-ferential and finite-difference equations for the BTC dy-namical core are: gross mass conservation, quadratic con-servation for advection terms, Coriolis force does not changethe kinetic energy, conservation of total available energy. Theimproved nonlinear iteration scheme is utilized for thetime-integration. The energy conservation for BTC dynami-cal core is validated by using the integration results from9-layer and 21-layer version respectively. Comparison resultsshow that, the changes of the kinetic energy and total avail-able potential energy during the integration are quite closefor both the BTC dynamical framework and the dynamicalframework of IAP 9-level and IAP 21-level AGCM, and thismay suggest that the BTC dynamical core can be used forlong-term integration with good computational ***, the BTC dynamical core has the advantageover the terrain following (sigma) coordinates in its betterrepresentation of the influence of the large-scale topographyon the atmospheric general circulation. Finally, the correct-ness and reasonableness of the BTC dynamical core has beenfurther proved by the numerical simulation of the topogra-phy influence on the quasi-stationary planetary wave with21-layer version of BTC dynamical framework.

关键词： blocking topography coordinates atmospheric general circulation model dynamical framework.