检索结果-南通市图书馆

A Facile Synthesis of 6β-Hydroxy-7α(H)-eudesma-4-en-3-one

在线全文

学校读者我要写书评

暂无评论

Chinese Chemical Letters 1998年第9期9卷 817-818页

作者： Gang ZHOU Zhao Ming XIONG Yong Gang CHEN yu lin li (National Laboratory of Applied Organic Chemistry and Institute of Organic Chemistry,Lanzhou University, Lanzhou 730000) Lanzhou Univ Inst Organ Chem Lanzhou 730000 Peoples R China Lanzhou Univ Natl Lab Appl Organ Chem Lanzhou 730000 Peoples R China

A stereoselective total synthesis of 6β-hydroxy-7α(H)-eudesma-4-en-3- 1startingfrom (+)-dihydrocarvone 7 has been described.

关键词： synthesis sesquiterpene 6β-Hydroxy-7α(H)-eudesm-4-en-3-one sihydrocarvone

Study on the Total Synthesis of 3-Oxo-9β-Acetoxyilicic Acid─The Synthesis of 9β-Acetoxy-3(4),11(13)-Dien-5αH,7αH-12-Eudesmanoic Acid Methyl Ester

在线全文

学校读者我要写书评

暂无评论

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

作者： Jiong YANG Zbao Ming XIONG Yong Gang CREN and yu lin li(National Laboratory of Applied Organic Chemistry and Institute of Organic Chemistry,ho University, Lanzhou 730000) Lanzhou Univ Natl Lab Appl Organ Chem Lanzhou 730000 Peoples R China Lanzhou Univ Inst Organ Chem Lanzhou 730000 Peoples R China

The synthesis of 99-acetoxy-3(4), 11(13)-dien-5αH 7αH-12-eudesmanoic acid methyl ester (2) was achieved from oxycarvone. The key step is the p-toluenesulfonhydrazide assisted reductiv rearrangement reaction

关键词： The Synthesis of 9 H,7 H-12-Eudesmanoic Acid Methyl Ester Dien-5 Study on the Total Synthesis of 3-Oxo-9 Acetoxyilicic Acid Acetoxy-3

Total Synthesis of (-)-Baimuxifuranic Acid

在线全文

学校读者我要写书评

暂无评论

Chinese Chemical Letters 1997年第8期8卷 697-700页

作者： Yong Gang CHEN Zhao Ming XIONG Jiong YANG yu lin li(National Laboratory of Applied Organic Chemistry and Institute of Organic Chemistry Lanzhou University,Lanzhou 730000) LANZHOU UNIV NATL LAB APPL ORGAN CHEMLANZHOU 730000PEOPLES R CHINA LANZHOU UNIV INST ORGAN CHEMLANZHOU 730000PEOPLES R CHINA

The first total synthesis of (-)-baimuxifuranic acid (1) starting from (-)-carvone has been described. In our studies a surprising allylic oxidation was found in the oxidation of alpha beta-unsaturated aldehyde 5 with... 详细信息

关键词： ppm MHz EIMS Baimuxifuranic Acid Total Synthesis of

STUDIES ON THE SYNTHESIS OF ISOSARCOPHYTOL-A

在线全文

学校读者我要写书评

暂无评论

Chinese Chemical Letters 1991年第1期2卷 7-8页

作者： yu-lin li Wei-Dong li Ying li Laboratory of Applied Organic Chemistry,Institute of Organic Chemistry,Lanzhou University,Lanzhou 730000

A precursor 9 of isosarcophytol-A(1)was prepared from(■)-farnesol(3)through 6 ***-A(1),a cembrane-type diterpenoid,was first isolated fromustralian soft coral(Nephthea brassica)in 1982,and its structure was estab-shed as(1,3,7,11-all ■,13■)-cembra-1,3,7,11-tetraen-13-ol,an isomer ofarcophytol-A■.As far as we know,its bioactivity and synthesis have noteen reported yet.

关键词： STUDIES ON THE SYNTHESIS OF ISOSARCOPHYTOL-A

SYNTHESIS OF 4,5-SECOCHOLESTANE AND 4-METHYL-4,5-SECOCHOLESTANE

在线全文

学校读者我要写书评

暂无评论

Chinese Chemical Letters 1991年第7期2卷 521-522页

作者： Jian Guo MA Tong Shuang li yu lin li Laboratory of Applied Organic Chemistry,Lanzhou University,Lanzhou 730000

The synthesis of 4,5-secocholestane and 4-methyl-4,5-secocholestane from cholesterol are reported.

关键词： ppm SYNTHESIS OF 4,5-SECOCHOLESTANE AND 4-METHYL-4,5-SECOCHOLESTANE

Application of systems biology to the study of chronic kidney disease

在线全文

学校读者我要写书评

暂无评论

Chinese Medical Journal 2012年第14期125卷 2603-2609页

作者： CAO yu-han LU lin-li ZHANG Jian-dong liU Bi-cheng Institute of Nephrology Zhong Da Hospital Southeast UniversityNanjing Jiangsu 210009 China

Chronic kidney disease （CKD） is a major public health problem that affects about 10% of the general population. Current approaches to characterize the category and progression of CKD are normally based on renal histopathological results and clinical parameters. However, this information is not sufficient to predict CKD progression risk reliably or to guide preventive interventions. Nowadays, the appearance of systems biology has brought forward the concepts of ＂-omics＂ technologies, including genomics, transcriptomics, proteomics, and metabolomics. Systems biology, together with molecular analysis approaches such as microarray analysis, genome-wide association studies （GWAS）, and serial analysis of gene expression （SAGE）, has provided the framework for a comprehensive analysis of renal disease and serves as a starting point for generating novel molecular diagnostic tools for use in nephrology. In particular, analysis of urinary mRNA and protein levels is rapidly evolving as a non-invasive approach for CKD monitoring. All these systems biological molecular approaches are required for application of the concept of ＂personalized medicine＂ to progressive CKD, which will result in tailoring therapy for each patient, in contrast to the ＂one-size-fits-all＂ therapies currently in use.

关键词： ' systems biology chronic kidney disease, microarray analysis, genome-wide association study,serial analysis of gene expression

SYNTHETIC STUDIES ON 9-HYDROXY-CEMBRENE-C

在线全文

学校读者我要写书评

暂无评论

Chinese Chemical Letters 1993年第9期4卷 769-770页

作者： ling li Wei Dong li yu lin li State Key Laboratory of Organic Chemistry,Institute of Organic Chemistry,Lanzhou University,Lanzhou 730000

A dicarbonyl precursor of 9-hydroxy-cembrene-C,8-tetrahydropyranoxy-3,7,11,15- tetramethyl-14-oxo-2E,6E,10E-hexdecatrienal,was prepared from farnesyl acetate via four steps.

关键词： ppm CO li SYNTHETIC STUDIES ON 9-HYDROXY-CEMBRENE-C

First Total Synthesis of 4,5-Sccoeudesmane-type and Iphionane-type Compounds-Synthesis of 4,5-Dioxo-seco-γ-eudesmol and 5β,11-Dihydroxyiphionan-4-one

在线全文

学校读者我要写书评

暂无评论

Chinese Chemical Letters 2000年第2期11卷 113-114页

作者： Zhao Ming XIONG Gang ZHOU Xiao Lei GAO Yong Gang CHEN yu lin li (National Laboratory of Applied Organic Chemistry and Institute of organic Chemistry, Lanzhou University, Lanzhou 730000) Natl. Lab. of Appl. Organ. Chemistry Institute of Organic Chemistry Lanzhou University Lanzhou 730000 China

4, 5-Secoeudesmane-type and iphionane-type compounds are sesquiterpenes with new carbon skeletons found in natrual sources in recent years.1-6 The co-occurence of 4, 5-secoeudesmanes, iphionanes and eudesmanes as natrual products suggests that 4, 5-secoeudesmanes, iphionanes most likely are generated biogenetically from eudesmanes, and iphionanes are formed biogenetically by aldol reaction of 4, 5-dioxosecoeudesmanes1,4,6,7. The study on the synthesis of this two kind of new sesquiterpenes has not been reported in the literature.

关键词： type First Total Synthesis of 4,5-Sccoeudesmane-type and Iphionane-type Compounds-Synthesis of 4,5-Dioxo-seco eudesmol and 5 Dihydroxyiphionan-4-one

Observation of acoustic hybrid topological phases induced by the p-d orbital interactions

在线全文

学校读者我要写书评

暂无评论

Science China(Physics,Mechanics & Astronomy) 2025年第1期Mechanics & Astronomy) .卷 132-139页

作者： Xiao Xiang Feng Gao yu-Gui Peng Peng Wu Zong-lin li Xue-Feng Zhu School of Physics and Innovation Institute Huazhong University of Science and Technology

In spinless systems,growing attention has recently been attracted to synthetic gauge fields,which redefine the fundamental crystal symmetries by utilizing the projective algebraic ***,synthetic gauge fields have been commonly investigated in single orbital systems,and explorations on hybrid orbitals remain elusive in ***,we report the experimental observation of hybrid topological phases induced by hybrid synthetic gauge flux,which is formed by the interaction between p and d orbitals embedded in acoustic *** breaking the translation symmetries of Lxand/or Ly,we unambiguously demonstrate the first-order M?bius edge states and higher-order corner *** work establishes a platform for seeking exotic topological phases induced by hybrid-orbitals interactions and initializing the framework of hybrid-orbitalsrelated topological *** applications can be anticipated in scenarios such as high-quality sensing and robust wave trapping due to the stepwise energy distribution of the hybrid topological phase.

关键词： topological insulator synthetic gauge field projective symmetry corner states