1-Chloroalkyl p-tolyl sulfoxides as useful agents for homologation of carbonyl compounds: conversion of carbonyl compounds to .alpha.-hydroxy acids, esters, and amides and .alpha.,.alpha.'-dihydroxy ketones
摘要:
One-carbon homologation of carbonyl compounds to alpha-hydroxy acids, esters, and amides by the use of 1-chloroalkyl p-tolyl sulfoxide as a hydroxycarbonyl anion equivalent is reported. Oxidation of the vinyl chlorides, the intermediates of the above-mentioned method, with osmium tetraoxide gives alpha,alpha'-dihydroxy ketones which are found in biologically active natural products such as cortisone and adriamycin.
SATOH, TSUYOSHI;ONDA, KEN-ICHI;YAMAKAWA, KOJI, J. ORG. CHEM., 56,(1991) N3, C. 4129-4134
作者:SATOH, TSUYOSHI、ONDA, KEN-ICHI、YAMAKAWA, KOJI
DOI:——
日期:——
NITROGEN-CONTAINING SPIRO DERIVATIVE AS RET INHIBITOR
申请人:GUANGZHOU BAIYUNSHAN PHARMACEUTICAL HOLDINGS CO., LTD. BAIYUNSHAN PHARMACEUTICAL GENERAL FACTORY
公开号:US20220204507A1
公开(公告)日:2022-06-30
Disclosed are a series of compounds with a nitrogen-containing spiro structure and an application thereof in the preparation of an RET kinase inhibitor. Specifically, disclosed is a compound as shown in formula (II) or a pharmaceutically acceptable salt thereof.