Introduction of natural menthol as the chiral auxiliary in a gamma-Br-alpha,beta-unsaturated ester leads to enantioselective generation of three chiral centers in a single step on reaction with a glycine anion equivalent to provide L-CCG-I in 94% ee.
An efficient and stereoselective synthesis of (2S,1′S,2′S)-2-(carboxycyclopropyl) glycine (LCCG-I): conformationally constrained l-glutamate analogues
摘要:
Conformationally restricted metabotropic glutamate receptor agonist (2S,1'S,2'S)-2-(Carboxycyclopropyl) glycine (LCCG-I) I have been efficiently synthesized in a stereoselective manner. A convenient five step synthesis of 1 from readily available (-)-dimenthyl(1S,2S)-cyclopropane-1,2-dicarboxylate 5 in 49% overall yield is described. (C) 2000 Elsevier Science Ltd. All rights reserved.
The present invention provides compounds of formula M-L-M′ (where M and M′ are each independently a monomeric moiety of Formula (I) and L is a linker). The dimeric compounds have been found to be effective in promoting apoptosis in rapidly dividing cells.
PHOTOREACTIVE REGULATOR OF GLUTAMATE RECEPTOR FUNCTION AND METHODS OF USE THEREOF
申请人:Trauner Dirk
公开号:US20090181454A1
公开(公告)日:2009-07-16
The present invention provides a synthetic regulator of glutamate receptor function, which regulator is a light-sensitive (photoreactive) regulator. The present invention further provides a light-regulated glutamate receptor that includes a subject synthetic regulator non-covalently associated with the glutamate receptor. Also provided are cells and membranes comprising a subject light-regulated glutamate receptor. The present invention further provides methods of modulating glutamate receptor function, involving use of light. The present invention further provides methods of identifying agents that modulate glutamate receptor function.
Provided herein are methods for producing products containing strained carbocycles, such as cyclopropene moieties and/or bicyclobutane moieties. The methods include combining an alkyne and a carbene precursor in the presence of a heme protein, e.g., a cytochrome P450, under conditions sufficient to form the strained carbocycle. Reaction mixtures for producing strained carbocycles are also described, as well as whole-cell catalysts comprising heme proteins and variants thereof for forming cyclopropenes, bicyclobutanes, and related products.
Compounds of the formula (I) in which R
1
, R
2
and X
1
have the meanings given in the specification, modulate metabotopic glotamate receptor function and are useful in treating disorders of the central nervous system.
1
式(I)化合物,其中 R
1
, R
2
和 X
1
具有说明书中给出的含义,可调节代谢型谷氨酸受体功能,有助于治疗中枢神经系统疾病。
1
Stereoselective Synthesis of <scp>l</scp>-2-(Carboxycyclopropyl)glycines via Stereocontrolled 1,3-Dipolar Cycloadditions of Diazomethane on <i>Z</i>- and <i>E</i>-3,4-<scp>l</scp>-Didehydroglutamates OBO Esters