Microbial transformation of 2-hydroxy and 2-acetoxy ketones with Geotrichum sp.
摘要:
Biotransformation of a series of o-, m- and p- substituted alpha-hydroxy - and alpha-acetoxyphenylethanones 1a-h and 9a-g with Geotrichum sp. led to the corresponding 1,2-diols 2 and/or monoacetates 10 in moderate to excellent enantiomeric excesses. alpha-Hydroxy- and alpha-acetoxyphenylethanones and their m- and p-derivatives gave preponderantly the S-configuration products while in the case of the o-derivatives R-alcohol was provided as the major enantiomer. The results of stereoselectivity were discussed. (C) 2000 Elsevier Science Ltd. All rights reserved.
Microbial transformation of 2-hydroxy and 2-acetoxy ketones with Geotrichum sp.
摘要:
Biotransformation of a series of o-, m- and p- substituted alpha-hydroxy - and alpha-acetoxyphenylethanones 1a-h and 9a-g with Geotrichum sp. led to the corresponding 1,2-diols 2 and/or monoacetates 10 in moderate to excellent enantiomeric excesses. alpha-Hydroxy- and alpha-acetoxyphenylethanones and their m- and p-derivatives gave preponderantly the S-configuration products while in the case of the o-derivatives R-alcohol was provided as the major enantiomer. The results of stereoselectivity were discussed. (C) 2000 Elsevier Science Ltd. All rights reserved.
Silicon-containing resist underlayer film-forming composition and patterning process
申请人:Shin-Etsu Chemical Co., Ltd.
公开号:EP2599818B1
公开(公告)日:2017-02-01
Microbial transformation of 2-hydroxy and 2-acetoxy ketones with Geotrichum sp.
作者:Zhi-Liang Wei、Guo-Qiang Lin、Zu-Yi Li
DOI:10.1016/s0968-0896(00)00023-7
日期:2000.5
Biotransformation of a series of o-, m- and p- substituted alpha-hydroxy - and alpha-acetoxyphenylethanones 1a-h and 9a-g with Geotrichum sp. led to the corresponding 1,2-diols 2 and/or monoacetates 10 in moderate to excellent enantiomeric excesses. alpha-Hydroxy- and alpha-acetoxyphenylethanones and their m- and p-derivatives gave preponderantly the S-configuration products while in the case of the o-derivatives R-alcohol was provided as the major enantiomer. The results of stereoselectivity were discussed. (C) 2000 Elsevier Science Ltd. All rights reserved.