Ravikumar, V. T.; Swaminathan, S.; Rajagopalan, K., Indian Journal of Chemistry - Section B Organic and Medicinal Chemistry, 1986, vol. 25, p. 292 - 293
Despite the resurging interest in covalent inhibitors, libraries are typically designed with synthon filtered out for reactive functionalities that can engage a target through covalent interactions. Herein, we report the synthesis of two libraries containing Michael acceptors to identify cysteine reactive ligands. We developed a simple procedure to discriminate between covalent and high affinity non-covalent
Compounds of formula (I):
wherein:
R
1
represents hydrogen, alkylcarbonyloxyalkyl or alkylcarbonylthioalkyl,
R
2
represents hydrogen, alkylcarbonyloxyalkyl, arylcarbonylthioalkyl or optionally substituted arylalkyl,
R
3
represents phenyl, which is optionally substituted, or indolyl,
their isomers, and addition salts thereof with a pharmaceutically acceptable acid or base.
Medicinal products containing the same which are useful in the treatment of arterial hypertension and complications thereof.
preparation of a novelclass of isoxazole-containing phosphinic peptides (peptides 5 a-i). Solid-phase version of this strategy was efficiently achieved on multipin solid technology, by developing a new protocol for the coupling of P-unprotected dipeptidic blocks with solid supported aminoacids in a quantitative and diastereoselective manner. Optimization of dipolarcycloadditions onto pin-embodied
Efficient, Transition Metal Mediated, Sequential, Two- and Three-Component Coupling Reactions for the Synthesis of Highly Substituted Five-Membered Ring Carbocycles
作者:Nicolas Coia、Didier Bouyssi、Geneviève Balme
DOI:10.1002/ejoc.200700197
日期:2007.7
Cu-catalysed method for the preparation of highlysubstituted methylenecyclopentanes, through a sequence involving a Michael addition of stabilized enolates to activated enynes followed by an intramolecular carbocupration reaction, is presented. This method was also successfully combined with a Pd-mediated coupling reaction to perform a new three-component reaction through a transmetallation pathway on
A highly diastereoselective P-Michael addition of chiral aminophosphinic acids to achiral acrylates has been developed, leading to phosphinic dipeptideisosteres in high yields and dr of up to >50:1. The method allows for the diastereoselective preparation of target compounds without the need for chiral auxiliaries or P-chiral substrates. A possible mechanistic explanation involves a domino chirality
已开发出手性氨基次膦酸与非手性丙烯酸酯的高度非对映选择性 P-Michael 加成反应,可产生高产率的次膦二肽电子等排体,dr 高达 >50:1。该方法允许非对映选择性制备目标化合物,而不需要手性助剂或 P-手性底物。一种可能的机制解释涉及从氨基次膦酸到 P 中心的多米诺骨牌手性转移,通过关键的二苯甲基酯基团放大,然后转移到 α-碳。