First enantiospecific synthesis of a 3,4-dihydroxy- l -glutamic acid [(3 S ,4 S )-DHGA], a new mGluR1 agonist
作者:Philippe Dauban、Carole de Saint-Fuscien、Francine Acher、Laurent Prézeau、Isabelle Brabet、Jean-Philippe Pin、Robert H. Dodd
DOI:10.1016/s0960-894x(99)00641-1
日期:2000.1
The first synthesis of one of the 4 possible stereoisomers of 3,4-dihydroxy-L-glutamic acid ((3S,4S)-DHGA 3), a natural product of unknown configuration, is described. The synthesis is based on the Lewis acid catalyzed reaction of benzyl alcohol with a D-ribose-derived 2,3-aziridino-gamma-lactone 4-benzyl carboxylate (6). Preliminary pharmacological studies showed that (3S,4S)-3 is an agonist of metabotropic
A new straightforward synthesis of 2,3-aziridino-γ-lactones
作者:Carole de Saint-Fuscien、Aurélie Tarrade、Philippe Dauban、Robert H Dodd
DOI:10.1016/s0040-4039(00)01071-6
日期:2000.8
A concise synthesis of 2,3-aziridino-gamma-lactones starting from commercially available alpha,beta-dihydroxy-gamma-lactones is described. The strategy involves a Michael-type addition of benzylamine onto a key 2-(5H)-furanon-3-yl trifluoromethanesulfonate, followed by in situ cyclization to the aziridine without lactone-ring-opening. (C) 2000 Elsevier Science Ltd. All rights reserved.
Application of 2,3-aziridino-γ-lactone methodology toward the enantiospecific synthesis of the (3S,4S)-isomer of dihydroxy-L-glutamic acid
作者:Philippe Dauban、Carole de Saint-Fuscien、Robert H Dodd
DOI:10.1016/s0040-4020(99)00405-6
日期:1999.6
The formal synthesis of benzyl 2,3-aziridino-N-(benzyloxycarbonyl)-2,3-dideoxy-γ-butyrolactone (21) from D-ribose is described. Reaction of 21 with excess benzyl alcohol in the presence of boron trifluoride etherate and hydrogenolysis of the product gave (3S,4S)-dihydroxy-L-glutamic acid ((3S,4S)-3).