A predominately anti-stereoselective chiral metal directed aldol condensation with aromatic aldehydes
作者:Lendon N. Pridgen、A. Abdel-Magid、I. Lantos
DOI:10.1016/s0040-4039(01)93794-3
日期:1989.1
Chiral haloacetyl oxazolidinones were reacted with aromaticaldehydes via their kinetically generated Z-enolates to yield predominately anti aldol adducts. The reaction is postulated to proceed thru a boat-like transition state. A unique reversal of chirality was observed in using stannous enolates.
Highly Enantioselective Synthesis of Glycidic Amides Using Camphor-Derived Sulfonium Salts. Mechanism and Applications in Synthesis
作者:Varinder K. Aggarwal、Jonathan P. H. Charmant、Daniel Fuentes、Jeremy N. Harvey、George Hynd、Diasuke Ohara、Willy Picoul、Raphaël Robiette、Catherine Smith、Jean-Luc Vasse、Caroline L. Winn
DOI:10.1021/ja0568345
日期:2006.2.1
amide-stabilized sulfur ylides derived from readily available camphor-derived sulfonium salts for the synthesis of glycidic amides have been studied. Primary, secondary, and tertiaryamides were tested, and it was found that the highest enantioselectivities were observed with tertiaryamides, which provided glycidic amides in good to excellent yields, exclusive trans selectivity, and excellent enantioselectivities
Thiophenyl Alkanoic acids useful as leukotriene antagonists
申请人:Smithkline Beckman Corporation
公开号:US04874792A1
公开(公告)日:1989-10-17
This invention relates to alkanoic acid compounds having phenyl and thio substituents which are useful as leukotriene antagonists and pharmaceutical compositions containing such compounds. This invention also relates to treating diseases in which leukotrienes are a factor by administration of an effective amount of the above compounds or compositions.
Leukotriene antagonists containing tetrazolyl groups
申请人:SmithKline Beecham Corporation
公开号:US05143931A1
公开(公告)日:1992-09-01
This invention relates to alkanoic acid compounds having phenyl and heteroarylthio substituents which are useful as leukotriene antagonists and pharmaceutical compositions containing such compounds. This invention also relates to methods of treating diseases in which leukotrienes are a factor by administration of an effective amount of the above compounds or compositions.
This invention relates to ester prodrugs for alkanoic acid compounds useful as leukotriene antagonists, and pharmaceutical compositions containing such ester prodrug compounds. This invention also relates to methods of treating diseases in which leukotrienes are a factor by administration of an effective amount of the above compounds or compositions.