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Two new alkaloids from the leaves of Uncaria hirsuta Haviland

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Chinese Chemical Letters 2008年第8期19卷 931-933页

作者： Wen Bo Xin Gui Xin Chou zheng tao wang Key Laboratory of Standardization of Chinese Medicines Ministry of Education Institute of Chinese Materia Medica of Shanghai University of Traditional Chinese Medicine Shanghai 201203 China Shanghai R＆D Center for Standardization of Chinese Medicines 1200 Cailun Road Shanghai 201203 China

Two new alkaloids, uncaric acid A and hirsutaside A, were isolated from Uncaria hirsuta. Their structures were determined by spectroscopic evidences and chemical means.

关键词： U. hirsuta Indole alkaloids

Two New Compounds from Lindera chunii Merr.

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Chinese Chemical Letters 2006年第10期17卷 1325-1327页

作者： Mian ZHANG Chao Feng ZHANG Qi Shi SUN zheng tao wang College of Traditional Chinese Pharmacy China Pharmaceutical University Nanjing 210038 College of Traditional Chinese Pharmacy Shenyang Pharmaceutical University Shenyang 110016

Two new compounds, linderafurane A and linchuniinone, were isolated from the root of Lindera chunii Merr.. The structures were elucidated by spectroscopic methods, and their activities against HIV-1 integrase were eva... 详细信息

关键词： Lauraceae Lindera chunii linderafurane A linchuniinone HIV- 1 integrase.

A novel cytotoxic neophysalin from Physalis alkekengi ***

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Chinese Chemical Letters 2009年第11期20卷 1327-1330页

作者： Chu Hang Zhang zheng tao wang Yi Ping Yang Qi Shi Sun School of Traditional Chinese Materia Medica Shenyang Pharmaceutical University Shenyang 110016 China Key Laboratory of Standardization of Chinese Medicines of Ministry of Education Institute of Chinese Materia Medica Shanghai University of Traditional Chinese Medicine Shanghai 201203 China

A new neophysalin, named 5α-hydroxy-25,27-dihydro-4,7-didehydro-7-deoxyneophysalin A（1）, along with three other known neophysalins （2-4） were isolated from the calyxes of Physalis alkekengi L. *** （Mast.） Makino. The structure of 1 was determined by means of 1D and 2D NMR, UV, IR and mass spectra. Compound 1 displayed potent cytotoxicities in vitro against PC- 3 and LNCaP cell lines.

关键词： Physalis alkekengi var. francheti Neophysalin Cytotoxicity

A New Isoflavonoid from Belamcanda chinensis （L.） DC.

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Journal of Integrative Plant Biology 2005年第11期47卷 1404-1408页

作者： Min-Jian QIN Wen-Liang JI zheng-tao wang Wen-Cai YE College of Traditional Chinese Medicine China Pharmaceutical University Nanjing 210038 China Shanghai University of Traditional Chinese Medicine Shanghai 201203 China Institute of Traditional Chinese Medicine Jinan University Guangzhou 510632 China

A new isoflavonoid, 5, 6, 7, 3＇-terahydroxy-8, 4＇, 5＇-trimethoxyisoflavone （1）, along with 10 known isoflavonoids, namely 5, 6, 7, 4＇-tetrahydroxy-8-methoxyisoflavone （2）, irilone （3）, genistein （4）, tectorigenin （5）, irigenin （6）, irisflorentin （7）, dichotomitin （8）, dimethyltectorigenin （9）, iridin （10）, and tectoridin （11）, was isolated from the alcohol extract of the rhizomes of Belamcanda chinensis （L.） DC. The structures of these compounds were elucidated on the basis of results of spectroscopic analysis.

关键词： Belamcanda chinensis isoflavonoid 5, 6, 7, 3'-terahydroxy-8, 4', 5'-trimethoxyisoflavone.

Two new triterpenoids from Psidium guajava

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Chinese Chemical Letters 2012年第7期23卷 827-830页

作者： Ji Cheng Shu Jian Qun Liu Gui Xin Chou zheng tao wang The MOE Key Laboratory for Standardization of Chinese Medicines and SATCM Key Laboratory for New Resources and Quality Evaluation of Chinese Medicines Institute of Chinese Materlaz Medica of Shanghai University of Traditional Chinese MedicineShanghai 201203China Key Laboratory of Modern Preparation of Traditional Chinese Medicines Ministry of EducationNanchang 330004China

Two new triterpenoids,named as 2 α,3 β,23-trihydroxylurs-12,20（30）-dien-28-oic acid β-D-glucopyranoside（1）,and 2 α,3 β,6 β,20 β,23,30-hexahydroxyurs-12-en-28-oic acid（2）,together with four known triterpenoids were isolated from the leaves of Psidium guajava *** structures were elucidated on the basis of mass and spectral evidence.

关键词： Psidium guajava Triterpcnoid

Two new limonoids from Melia toosendan

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Chinese Chemical Letters 2008年第2期19卷 183-186页

作者： Fan Xie Chao Feng Zhang Mian Zhang zheng tao wang Bo Yang Yu Key Laboratory of Modern Chinese Medicines （China Pharmaceutical University） Ministry of Education Nanjing 210038 PR China Research Department of Pharmacognosy China Pharmaceutical University Nanjing 210038 PR China

Two new limonoid-type triterpenoids, named 12-o-ethyl-l-deacetylnimbolinin B and 1-o-tigloyl-1-o-debenzoylohchinal, have been isolated from the fruit of Melia toosendan Sieb. et Zucc. Their structures were elucidated ... 详细信息

关键词： Melia toosendan Limonoids 12-o-Ethyl-1-deacetylnimbolinin B 1-o-Tigloyl-1-o-debenzoylohchinal

Three New Anthraquinones from Polygonum cillinerve

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Chinese Chemical Letters 2005年第8期16卷 1050-1052页

作者： Huan Yang QI Chao Feng ZHANG Mian ZHANG Jian Qun LIU zheng tao wang Department of Pharmacognosy China Pharmaceutical University Nanjing 210038

Three new anthraquinones, emodin-8-β-D-（2＂-O-coumarate）glucoside 1, emodin-8-β-D-（6＇-O-acetyl）glucoside 2 and physicon-8-β-D-（6＇-O-acetyl）glucoside 3, were isolated from the roots of Polygonum cillinerve and their structures were established by spectroscopic methods. The biological activity indicated that compound 1 had the scavenging activity on 1,1-diphenyl-2-picrylhydrazyl （DPPH） radicals （the IC50 = 8.5 μmol/L）, and compound 1-3 showed no activities against HL-60 and BCJC-823 cells by MTT method in vitro.

关键词： Polygonum cillinerve anthraquinone antioxidant activity cytotoxic activity.

A New Bibenzyl Derivative from Dendrobium moniliforme

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Chinese Chemical Letters 2002年第6期13卷 535-536页

作者： Zhi Ming BI Li YANG zheng tao wang Luo Shan XU Guo Jun XU Department of Pharmacognosy China Pharmaceutical UniversityNanjing 210038

A new bibenzyl derivative, 3,4-dihydroxy-4,5-dimethoxy bibenzyl, was isolated from a orchid Dendrobium moniliforme. The structure elucidation and 1H,13C NMR assignments were achieved by spectroscopic method.

关键词： Orchidaceae Dendrobium moniliforme 3,4-dihydroxy-4,5-dimethoxy bibenzyl.

Formation behaviors of rod-like reactive shaped charge penetrator and their effects on damage capability

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Defence Technology（防务技术） 2024年第2期32卷 242-253页

作者： tao Sun Haifu wang Shipeng wang Chao Ge Die Hu Pengwan Chen Yuanfeng zheng Beijing Institute of Technology State Key Laboratory of Explosion Science and TechnologyBeijing100081China Xi'an Institute of Electromechanical Information Technology Xi'an710065China

Formation behaviors of rod-like reactive shaped charge penetrator(RRSCP)and their effects on damage capability are investigated by experiments and numerical *** pulsed X-ray technology and a spaced aluminum/steel plate with the thicknesses of 5 mm/100 mm are *** types of sphericalsegment aluminum-polytetrafluoroethylene-copper(Al-PTFE-Cu)reactive liners with Cu contents of 0%,46.6%,and 66%are fabricated and *** experimental results show that the reactive liners can form excellent rod-shaped penetrators with tail skirts under the shaped charge effect,but the tail skirts disappear over ***,rupturing damage to the aluminum plate and penetration to the steel plate are caused by the RRSCP *** simulation analysis,the RRSCP is formed by a mechanically and chemically coupled response with the reactive liner activated by shock in its outer walls and bottom and then backward overturning,forming a leading reactive penetrator and a following chemical energy *** unique formation structure determines the damage modes of the aluminum plate and the steel *** analysis indicates that the formation behaviors and damage capability of Al-PTFE-Cu RRSCP strongly depend on Cu *** increasing Cu content,the velocity,activation extent,and reaction extent of Al-PTFE-Cu RRSCP decrease,which contribute to elongation and alleviate the negative effects of chemical reactions on elongation,significantly increasing the length-diameter ratio and thus enhancing the capability of steel plate ***,the lower activation extent and energetic density will weaken the RRSCP's capability of causing rupturing damage to the aluminum plate.

关键词： Reactive materials Al-PTFE composites Reactive liner X-ray Penetration