Synthesis and structure–activity relationships of novel lincomycin derivatives. Part 2. Synthesis of 7(S)-7-deoxy-7-(4-morpholinocarbonylphenylthio)lincomycin and its 3-dimensional analysis with rRNA
Lincomycin derivatives, which possess a hetero ring at the C-7 position via sulfur atom, were synthesized by three types of reactions: (1) Mitsunobu reaction of 2,3,4-tris-O-(trimethylsiliyl)lincomycin (1) with the corresponding thiol, (2) SN2 reaction of 7-O-methanesulfonyl-2,3,4-tris-O-(trimethylsiliyl)lincomycin (2) with the corresponding thiol and (3) Pd-catalyzed cross-coupling reaction of 7-
Fragment Growing and Linking Lead to Novel Nanomolar Lactate Dehydrogenase Inhibitors
作者:Anna Kohlmann、Stephan G. Zech、Feng Li、Tianjun Zhou、Rachel M. Squillace、Lois Commodore、Matthew T. Greenfield、Xiaohui Lu、David P. Miller、Wei-Sheng Huang、Jiwei Qi、R. Mathew Thomas、Yihan Wang、Sen Zhang、Rory Dodd、Shuangying Liu、Rongsong Xu、Yongjin Xu、Juan J. Miret、Victor Rivera、Tim Clackson、William C. Shakespeare、Xiaotian Zhu、David C. Dalgarno
DOI:10.1021/jm3014844
日期:2013.2.14
LDH-A inhibitors by fragment-based drug discovery. We applied ligand based NMR screening to identify low affinity fragments binding to LDH-A. The dissociation constants (Kd) and enzyme inhibition (IC50) of fragment hits were measured by surface plasmon resonance (SPR) and enzyme assays, respectively. The binding modes of selected fragments were investigated by X-ray crystallography. Fragment growing
A Convenient Preparation of Heteroaryl Sulfonamides and Sulfonyl Fluorides from Heteroaryl Thiols
作者:Stephen W. Wright、Kelly N. Hallstrom
DOI:10.1021/jo052164+
日期:2006.2.1
thiols may be oxidized to the sulfonyl chloride at low temperature (−25 °C) by using 3.3 equiv of aqueous sodium hypochlorite. The reaction is rapid, avoids the use of chlorine gas, and succeeds with substrates that have previously been found to afford little or none of the sulfonamide product with other procedures. The method allows the preparation of the sulfonylfluorides, which are stable enough to
Heterocyclic sulfides of the general formula heterocycle-S-R, a process for their preparation and, in particular, their use for immunostimulation, immunorestoration and cytostatic treatment, and pharmaceutical agents, which contain a sulfide of this type, for these indications.
4-Sulfide/sulfoxide/sulfonyl-1h-pyrazolyl derivative compounds, for use in diseases associated with the 5-ht2c receptor
申请人:Ladouceur H. Gaetan
公开号:US20050119489A1
公开(公告)日:2005-06-02
Disclosed are 4-sulfide/sulfoxide/sulfonyl-1H-pyrazolyl derivative compounds of formulas (I) or (II): wherein the variables n, R, R
1
, R
2
, R
3
, R
3′
, R
4
, R
4′
, R
5
and R
6
are as defined in the specification. The compounds are useful for the treatment or prevention of diseases and/or behaviors involving the 5-HT
2C
receptor.