5-ALKOXY-2(3H)-OXAZOLONE COMPOUNDS AND PROCESS FOR THE PREPARATION THEREOF
申请人:Ube Industries, Ltd.
公开号:EP0945448B1
公开(公告)日:2008-11-26
US6020496A
申请人:——
公开号:US6020496A
公开(公告)日:2000-02-01
Efficient Solid-Phase Synthesis of Highly Functionalized 1,4-Benzodiazepin-5-one Derivatives and Related Compounds by Intramolecular Aza-Wittig Reactions
作者:Carmen Gil、Stefan Bräse
DOI:10.1002/chem.200401112
日期:2005.4.22
have been numerous reports on the synthesis of similar skeletons. We have employed the T1 triazene linker to yield 1,4-benzodiazepin-5-one. Starting from various substituted triazene resins, cleavage in the presence of an azide donor, such as trimethylsilylazide, gave rise to aryl azides. Intramolecularaza-Wittigreactions produced the appropriately functionalized N-heterocycles. By using this route
A ring expansion approach to N-oxy-2,5-diketopiperazines
作者:Amy C. Jackson、James T. Olsen、Sasha Sundstrom、Kyle M. Lambert、John L. Wood
DOI:10.1016/j.tetlet.2022.153851
日期:2022.6
A ringexpansion of tetramic acids (pyrrolidine-2,4-diones) to N-oxy-2,5-diketopiperazines (DKPs) is described. This method allows for the facile and late-stage construction of the hydroxamic acid moiety and can thereby serve as a general method for accessing N-oxy-2,5-DKP natural products.