Unexpected ring-expansion of 1,2-benzisoxazol-3-ones
作者:Steven A. Raw、Anne M. O’Kearney-McMullan、Mark A. Graham
DOI:10.1016/j.tetlet.2011.10.027
日期:2011.12
A novel and unexpected ring-expansion reaction of 1,2-benzisoxazol-3-ones is identified. The scope of this reaction is exemplified and the proposed mechanism is also implicated in another degradation process. This reaction also represents a new method for accessing the 4H-1,3-benzoxazin-4-one skeleton.
鉴定出一种新颖的和出乎意料的1,2-苯并恶唑-3-酮的扩环反应。举例说明了该反应的范围,并且所提出的机理还涉及另一降解过程。该反应也代表了一种访问4 H -1,3-苯并恶嗪-4-one骨架的新方法。
NOVEL BENZOPYRAN DERIVATIVES AS POTASSIUM CHANNEL OPENERS
申请人:Zhang Xuqing
公开号:US20070049556A1
公开(公告)日:2007-03-01
The present invention is directed to novel benzopyran derivatives, pharmaceutical compositions containing them and their use in the treatment of disorders related to potassium channel.
Compounds and methods are provided for the treatment of disease conditions in which modification of cholinergic, especially muscarinic m1, m4, or both m1 and m4, receptor activity has a beneficial effect. In the method, an effective amount of a compound is administered to a patient in need of such treatment.
BENZISOXAZOLE ANALOGS AS GLYCOGEN SYNTHASE ACTIVATORS
申请人:Bolin David Robert
公开号:US20110112158A1
公开(公告)日:2011-05-12
Provided herein are compounds of the formula (I):
as well as pharmaceutically acceptable salts thereof, wherein the substituents are as those disclosed in the specification. These compounds, and the pharmaceutical compositions containing them, are useful for the treatment of metabolic diseases and disorders such as, for example, type II diabetes mellitus.
Studies on 3-substituted 1,2-benzisoxazole derivatives. IV. Rearrangement of N-substituted 2H-1,2-benzisoxazolin-3-one to 2-substituted 2H-1,3-benzoxazin-4-one.
作者:HITOSHI UNO、MIKIO KUROKAWA
DOI:10.1248/cpb.26.549
日期:——
The base catalyzed ring expansion of 2-substituted 2H-1, 2-benzisoxazolin-3-one (3) to 2-substituted 2H-1, 3-benzoxazin-4-one (4) was observed during the alkylation of 3-hydroxy-1, 2-benzisoxazole (1).