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Chinese Chemical Letters 2011年第7期22卷 811-814页

作者： Wei lin Li Qiu yan Luo fu lin yan School of Pharmacy Xinxiang Medical University Xinxiang 453003 China Department of Gynecological and Obstetric Third Affiliated Hospital to Xinxiang Medical University Xinxiang 453003 China

An environmentally friendly procedure for the preparation of 10-aryl-6,8-dimethyl-6,10-dihydro-5-oxa-6,8-diazaanthra[2,3- d] [ 1,3]dioxole-7,9-diones under thermal solvent-free conditions in the presence of cyanurie c... 详细信息

关键词： Bcnzodioxoles 3,4-Methylenedioxyphenol 1,3-Dimethylbarbituric acid Cyanuric chloride Solvent-free

A New Isopropenyl Benzofuran-type Tetramer from Ligularia stenocephala

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Chinese Chemical Letters 2003年第12期14卷 1253-1254页

作者： fu lin yan Ai Xia WANG Zhong Jian JIA Lei HE College of Chemistry and Chemical Engineering National Laboratory of Applied Organic ChemistryLanzhou UniversityLanzhou 730000

A new isopropenyl benzofuran-type tetramer was isolated from the roots of ligularia stenocephala and its structure was established by spectroscopic methods.

关键词： Compositae Ligularia stenocephala isopropenyl benzofuran-type tetramer.

Two new diterpenoids from Isodon serra

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Chinese Chemical Letters 2007年第11期18卷 1383-1385页

作者： fu lin yan Lai Bin Zhang Ji Xia Zhang Han Dong Sun Pharmacy College Xinxiang Medical University Xinxiang 453003 China Kunming Institute of Botuny Chinese Academy of Sciences Kunming 650204 China

From the aerial part of Isodon serra, two new ent-6,7-seco-kaurane-type diterpenoids, 15α,20β-dihydroxy-6β- methoxy-6,7- seco-6,20-epoxy-1,7-olide-ent-kaur-16-ene （1） and 6α,15α-dihydroxy-20-aldehyde-6,7-seco-6,11α-epoxy-1,7-olide-ent-kaur-16- ene （2） were isolated. Their structures were elucidated by spectroscopic means.

关键词： Labiatae Isodon serra ent-6,7-seco-Kaurane diterpenoid

A new guaianolide from the roots of Pterocypsela elata

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Chinese Chemical Letters 2013年第1期24卷 55-56页

作者： Yi-Xiao Bai Jing Tan fu-lin yan Ming-Ming Ding Xiang Wang Pharmacy College Xinxiang Medical University Third Clinical College of Xinxiang Medical University

In order to find more biologically active substances, we have carefully investigated the chemical constituents of Pterocypsela elata. One new guaianolide, （4S）-ll-methoxycarbonyl-guaiane- l（10）,5（6）,7（11）,8（9）-tetraen-6,12-olide was isolated from the EtOAc extracts of the roots of P. elata. Its structure was elucidated by various spectroscopic methods and confirmed by X-ray crystallographic analysis.

关键词： CompositaePterocypsela elataSesquiterpene lactonesGuaianolide

Two new ent-kaurane diterpenoids from Isodon excisoides

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Chinese Chemical Letters 2009年第2期20卷 201-203页

作者： Ji Xia Zhang Yong Xue Wang Zhi An He fu lin yan Han Dong Sun Pharmaceutical Laboratory Xinxiang Medical University Xinxiang 453003 China State Key Laboratory of Phytochemistry and Plant Resources in West China Kunming Institute of Botany Chinese Academy of Sciences Kunming 650204 China

Two new ent-kaurane diterpenoids taihangexcisoidesin A and B （1 and 2）, were isolated from the EtOAc extract of the leaves of lsodon excisoides. Their structures were determined on the basis of spectroscopic methods.

关键词： Isodon excisoides ent-Kaurane Diterpenoid Taihangexcisoidesin A and B

New ent-kaurane-type diterpenoids from Isodon nervosus

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Chinese Chemical Letters 2008年第4期19卷 441-443页

作者： fu lin yan Lan Qing Guo Ji Xia Zhang Su Ping Bai Han Dong Sun Pharmacy College Xinxiang Medical UniversityXinxiang 453003China Kunming Institute of Botany Chinese Academy of SciencesKunming 650204China

Two new ent-kaurane-type diterpenoids,6β,7β,13α-trihydroxy-1α-acetoxy-7α,20-epoxy-ent-kaur-16-en-15-one（1）and 15β- hydroxy-6,7-seco-6,11β：6,20-diepoxy-1α,7-olide-ent-kaur-16-ene（2）were isolated from the I... 详细信息

关键词： Labiatae Isodon nervosus ent-Kaurane diterpenoid

High sensitive pressure sensors based on multiple coating technique

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Chinese Physics B 2020年第2期29卷 442-445页

作者： Rizwan Zahoor Chang Liu Muhammad Rizwan Anwar fu-yan lin An-Qi Hu Xia Guo School of Electronic Engineering State Key Laboratory for Information Photonics and Optical CommunicationsBeijing University of Posts and TelecommunicationsBeijing 100876China

A multi-coating technique of reduced graphene oxide(RGO)was proposed to increase the sensitivity of paper-based pressure *** maximum sensitivity of 17.6 kPa^-1 under the 1.4 kPa was *** electrical sensing mechanism is attributed to the percolation *** paper pressure sensors were applied to monitor the motor vibration,which indicates the potential of mechanical flaw detection by analyzing the waveform difference.

关键词： paper sensor reduced graphene oxide sensitivity

A new ent-abietane diterpenoid from Isodon macrophyllus

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Chinese Chemical Letters 2008年第7期19卷 849-851页

作者： Zheng Yue Chen Pei Yong Qiu Yong Xue Wang Su Ping Bai fu lin yan Ji Xia Zhang Han Dong Sun Pharmaceutical Laboratory Xinxiang Medical University Xinxiang 453003 China State Key Laboratory of Phytochemistry and Plant Resources in West China Kunming Institute of Botany Chinese Academy of Sciences Kunming 650204 China

A new ent-abietane diterpenoid, named dayecrystal C, was isolated from the EtOAc extract of the dried leaves of Isodon macrophyllus. Its structure was determined on the basis of spectroscopic methods.

关键词： Isodon macrophyllus ent-Abietane Diterpenoid Dayecrystal C

Treatment of Chronic Periodontal Defects with Tissue Engineering: A Pilot Study in Dogs

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生物医学工程学杂志 2005年第S1期22卷 67-68页

作者： Min-Kui lin fu-Hua yan~Δ Xin ZHAO Kai LUO(Department of Periodontology, College of Stomatology, fujian Medical University, fuzhou 350002, China)

The solid state reactions of o-aminobenzoic acid with Zn(Ⅱ), Cu(Ⅱ), Ni(Ⅱ), Mn(Ⅱ) acetate hydrate at room temperature

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Chinese Journal of Chemistry 1994年第3期12卷 243-247页

作者： ZHENG, Li-Min fu, yan lin, Jian-Jun XIN, Xin-QuanCoordination Chemistry State Key Laboratory, Department of Chemistry, Nanjing University, Nanjing, Jiangsu 210008, China

The solid-solid state reactions of o-aminobenzoic acid with Zn(OAc)2.2H2O, Cu(OAc)2 .H2O, Ni(OAc)2.4H2O and Mn(OAc)2.4H2O result in the formation of corresponding complexes M(OAB)2 (M = Zn(Ⅱ), Cu(Ⅱ), Ni(Ⅱ), Mn(IⅡ)). XRD, IR and elemental analysis methods have been used to characterize the solid products. The activation energies of these reactions, which are calculated from the kinetic data obtained by means of the isothermal electrical conductivity measurement method, have been found to increase in the order: Cu(OAc)2.H2O(37.7 ***-1)~Mn(OAc)2.4H2O (***-1) < Zn(OAc)2.2H2O (56.3 ***-1) < Ni(OAc)2.4H2O (85.2 ***-1). The trend is related to their crystal structures.

关键词： Solid state reaction transition metal acetate o-aminobenzoic acid electrical conductivity.