The present invention provides compounds of formula (I): (I) which are useful in the control of endoparasites, for example heartworms, in warm-blooded animals.
本发明提供了式(I)的化合物,这些化合物在温血动物中对内寄生虫,例如心丝虫,的控制中是有用的。
BICYCLIC DERIVATIVES
申请人:Elanco Tiergesundheit AG
公开号:EP3897842A1
公开(公告)日:2021-10-27
Catalytic Asymmetric Claisen Rearrangement of Enolphosphonates: Construction of Vicinal Tertiary and All-Carbon Quaternary Centers
作者:Jiajing Tan、Cheol-Hong Cheon、Hisashi Yamamoto
DOI:10.1002/anie.201203092
日期:2012.8.13
A copper‐catalyzed enantioselective Claisenrearrangement of easily accessible enolphosphonates using the commercially available PhBOX as the chiral ligand was developed. A wide range of rearrangement products with contiguous tertiary and all‐carbon quaternarycenters were obtained in excellent yields and stereoselectivities. The α‐ketophosphonate substituent in the products could be easily transformed