Abstract Reaction of the protected glycidol derivatives (1A-C) with a wide variety of Grignard reagents (2a-h) in the presence of catalyticamount of CuCN provided the corresponding monoprotected diol derivatives (3) in a highly regioselective manner.
[EN] NOVEL PYRROLE DERIVATIVES AS PHARMACEUTICAL AGENTS<br/>[FR] DERIVES DE PYRROLE UTILISES COMME AGENTS PHARMACEUTIQUES
申请人:LILLY CO ELI
公开号:WO2002094833A1
公开(公告)日:2002-11-28
Novel pyrrazole derivative compounds and their use as pharmaceutical agents, in particular their use as TGF-beta signal transduction inhibitors. The disclosed invention relates to compounds of the structure (I) wherein (I) is a four, five, or six membered saturated ring and X is C, O or S.
Novel pyrrole derivatives as pharmaceutical agents
申请人:——
公开号:US20040106604A1
公开(公告)日:2004-06-03
Novel pyrrazole derivative compounds and their use as pharmaceutical agents, in particular their use as TGF-beta signal transduction inhibitors. The disclosed invention relates to compounds of the structure (I) wherein (I) is a four, five, or six membered saturated ring and X is C, O or S.
1
Novel pyrrazole derivative compounds and their use as pharmaceutical agents, in particular their use as TGF-beta signal transduction inhibitors. The disclosed invention relates to compounds of the structure (I) wherein (I) is a four, five, or six membered saturated ring and X is C, O or S
Kinetic resolution of 2-acylated-1,2-diols by lipase-catalyzed enantiomer selective acylation
作者:Gabriella Egri、Eszter Baitz-Gács、László Poppe
DOI:10.1016/0957-4166(96)00161-9
日期:1996.5
Enantiomer selectivity of lipase catalyzed acylation of 2-acylated 1,2-diols was studied. First, acylation of 2-acetoxyheptan-1-ol rac-3b with vinyl acetate was investigated by varying the enzyme and the solvent, showing the highest enantiomer selectivity by using lipase from Pseudomonas fluorescens (PfL) in hexane-vinyl acetate (VA). We have found varying or even reversed enantiomer selectivity for different secondary acyl moieties in 2-acyloxyheptan-1-ols rac-3bA-F. Next, all six possible types of enantiomer selective biotransformations (hydrolysis of diacetate and the two kinds of monoacetetes; acylation of diol and the two kinds of monoacetates) were compared on two model diols rac-4b,d. Among the transformations investigated, acetylation of secondary monoacetates rac-3b,d showed the highest enantiomer selectivity. Finally, PfL catalyzed acetylations of several 2-acetylated 1,2-diols rac-3a-g were investigated under our optimum conditions. Copyright (C) 1996 Elsevier Science Ltd