Lipase-mediated kinetic resolution of a synthetic equivalent of 2-hydroxymethylcyclopentadien-5-ol
摘要:
Racemic 3-hydroxy-2-hydroxymethyl-endo-tricyclo[5.2.1.0(2,6)]-dec-4,8-diene serving as a synthetic equivalent of 2-hydroxymethylcyclopentadien-5-ol has been resolved by employing lipase-mediated kinetic transesterification with vinyl acetate in an organic solvent. (C) 1998 Elsevier Science Ltd. All rights reserved.
Lipase-mediated kinetic resolution of a synthetic equivalent of 2-hydroxymethylcyclopentadien-5-ol
摘要:
Racemic 3-hydroxy-2-hydroxymethyl-endo-tricyclo[5.2.1.0(2,6)]-dec-4,8-diene serving as a synthetic equivalent of 2-hydroxymethylcyclopentadien-5-ol has been resolved by employing lipase-mediated kinetic transesterification with vinyl acetate in an organic solvent. (C) 1998 Elsevier Science Ltd. All rights reserved.
Intermediates and improved processes for the preparation of neplanocin A
申请人:Chisso Corporation
公开号:US06265209B1
公开(公告)日:2001-07-24
Intermediate compounds, including 2-(t-butyldimethylsilyloxymethyl)-3,4-[(dimethylmethylene)dioxy]-5-hydroxy-tricyclo[5.2.1.02,6]dec-8-ene, which are useful for the synthesis of neplanocin A having strong antitumor activity. Improved processes for the preparation of neplanocin A, starting from optically active 2-hydroxymethyl-5-hydroxy-tricyclo[5.2.1.02,6]deca-3,8-diene and via a key step comprising a retro-Diels-Alder reaction of the above intermediate.