The first chemoselective tandem acylation of the Blaise reaction intermediate: a novel method for the synthesis of α-acyl-β-enamino esters, key intermediate for pyrazoles
作者:Yu Sung Chun、Ki Kon Lee、Young Ok Ko、Hyunik Shin、Sang-gi Lee
DOI:10.1039/b813369g
日期:——
The Blaise reaction intermediate, a zinc bromide complex of β-enamino ester, could be activated in situ by addition of a stoichiometric or catalytic amount of n-BuLi to allow chemoselective tandem C2-acylation providing α-acyl-β-enamino esters, which are valuable intermediates for the syntheses of tri- and tetrasubstituted pyrazoles.
Isothiazole-pyridine derivatives as modulators of HIF (hypoxia inducible factor) activity
申请人:Zhou Xiaoti
公开号:US08952160B2
公开(公告)日:2015-02-10
The present invention relates to novel compounds according to Formula I or II, methods, and compositions capable of decreasing HIF hydroxylase enzyme activity, thereby increasing the stability and/or activity of hypoxia inducible factor (HIF). Formula (I) or (II).
ISOTHIAZOLE-PYRIDINE DERIVATIVES AS MODULATORS OF HIF (HYPOXIA INDUCIBLE FACTOR) ACTIVITY
申请人:FibroGen, Inc.
公开号:US20150209336A1
公开(公告)日:2015-07-30
The present invention relates to novel compounds according to Formula I or II, methods, and compositions capable of decreasing HIF hydroxylase enzyme activity, thereby increasing the stability and/or activity of hypoxia inducible factor (HIF). Formula (I) or (II).
ISOTHIAZOLE-PYRIDINE DERIVATES AS MODULATORS OF HIF (HYPOXIA INDUCIBLE FACTOR) ACTIVITY
申请人:Zhou Xiaoti
公开号:US20100330199A1
公开(公告)日:2010-12-30
The present invention relates to novel compounds according to Formula I or II, methods, and compositions capable of decreasing HIF hydroxylase enzyme activity, thereby increasing the stability and/or activity of hypoxia inducible factor (HIF). Formula (I) or (II).