Preparation and Synthetic Applications of Enantiopure (2S,3S)- or (2R,3S)-2-Halomethyl-1,2-epoxyalkan-3-amines
摘要:
Enantiomerically pure (2S,3S)-3 and its diastereoisomer (2R,3S)-2-halomethyl-1,2-epoxyalkan-3-amine 4 have been obtained from 1-aminoalkyl halomethyl ketones 1 and (iodomethyl)lithium or (chloromethyl)lithium, respectively. Some synthetic applications of compounds 3 are described: chiral unsaturated 1,3-aminoalcohols 8 or 2-(halomethylidene)-3-(dibenzylamino)-alkan-1-ol 11 is obtained from 3 by halogeno-lithium or by hydrogen-lithium exchange, respectively. Transformation of 8c into its methyl ester derivative 9c is also reported.
Diastereoselective synthesis of hydroxyethylene dipeptide isosteres
申请人:Emory University
公开号:US05587514A1
公开(公告)日:1996-12-24
A process for the synthesis of hydroxyethylene dipeptide isosteres from .alpha.-N,N-di(protected)-amino(alkyl or substituted alkyl)methyl ketones that can be efficiently carried out on an industrial scale. The process proceeds with excellent diastereoselectivity and chemical efficiency, and can be used to prepare a wide variety of hydroxyethylene dipeptide isosteres for a variety of uses, including as HIV-1 protease inhibitors and renin inhibitors.
(EN) A process for the synthesis of hydroxyethylene dipeptide isoseteres from $g(a)-N,N-di(protected)-amino(alkyl or substituted alkyl) methyl ketones that can be efficiently carried out on an industrial scale. The process proceeds with excellent diastereoselectivity and chemical efficiency, and can be used to prepare a wide variety of hydroxyethylene dipeptide isosteres for a variety of uses, including as HIV-1 protease inhibitors and renin inhibitors.(FR) Procédé de synthèse d'isostères dipeptidiques d'hydroxyéthylène à partir de méthylacétones $g(a)-N,N-diamino(protégé)(alkyle ou alkyle substitué), pouvant être efficacement appliqué à l'échelle industrielle. Ce procédé présente une excellent diastéréosélectivité ainsi qu'un excellent rendement chimique et peut être utilisé pour préparer une grande variété d'isostères dipeptidiques d'hydroxyéthylène destinés à des usages différents, y compris comme inhibiteurs de protéase de VIH-1 et comme inhibiteurs de rénine.
Preparation and Synthetic Applications of Enantiopure (2<i>S</i>,3<i>S</i>)- or (2<i>R</i>,3<i>S</i>)-2-Halomethyl-1,2-epoxyalkan-3-amines
作者:José Barluenga、Beatriz Baragaña、José M. Concellón
DOI:10.1021/jo9823590
日期:1999.4.1
Enantiomerically pure (2S,3S)-3 and its diastereoisomer (2R,3S)-2-halomethyl-1,2-epoxyalkan-3-amine 4 have been obtained from 1-aminoalkyl halomethyl ketones 1 and (iodomethyl)lithium or (chloromethyl)lithium, respectively. Some synthetic applications of compounds 3 are described: chiral unsaturated 1,3-aminoalcohols 8 or 2-(halomethylidene)-3-(dibenzylamino)-alkan-1-ol 11 is obtained from 3 by halogeno-lithium or by hydrogen-lithium exchange, respectively. Transformation of 8c into its methyl ester derivative 9c is also reported.