Enzymatic process for the preparation of butyrolactones
申请人:Lonza Ltd
公开号:EP2634180A1
公开(公告)日:2013-09-04
The invention relates to a process for the preparation of a compound of formula
wherein R1 is selected from the group consisting of hydrogen, C2-11-acyl, C4-9-cycloalkanoyl, aryl, aralkyl, aroyl, hetaryl, hetaralkyl and hetaroyl, comprising a biotransformation of a compound of formula
wherein R1 is as defined above, wherein said biotransformation is carried out using a polypeptide having aldo-keto reductase activity or a microorganism containing same.
Access to Spiroindanolactones/lactams through an Aryne Insertion/Spirocyclization Strategy
作者:Y. N. Sambasiva Rao、Palash Ghosh、Prathama S. Mainkar、Srivari Chandrasekhar
DOI:10.1021/acs.orglett.2c02046
日期:2022.7.29
An efficient and metal-free strategy for the synthesis of spiro-fused indanolactones/lactams has been developed for the reaction of arynes with α-chloroacetyl lactones/lactams. This strategy provides access to spiroindanone derivatives via aryne insertion/spirocyclization.