.alpha.-Amino aldehyde equivalents as substrates for rabbit muscle aldolase: synthesis of 1,4-dideoxy-D-arabinitol and 2(R),5(R)-bis(hydroxymethyl)-3(R),4(R)-dihydroxypyrrolidine
摘要:
This work examined the application of rabbit muscle aldolase (RAMA) to stereospecific carbon-carbon bond formation in the preparation of carbohydrates containing amino groups. Several alpha-amino aldehyde equivalents were evaluated as substrates for RAMA and for their synthetic utility in transformations following the aldol reaction. This methodology is illustrated by the syntheses of the pyrrolidine alkaloids 1,4-dideoxy-D-arabinitol and 2(R),5(R)-bis(hydroxymethyl)-3(R), 4(R)-dihydroxypyrrolidine. The kinetic resolution of racemic aldehydes by RAMA and mild methods for transforming the amino equivalents into the desired amines are discussed briefly.
.alpha.-Amino aldehyde equivalents as substrates for rabbit muscle aldolase: synthesis of 1,4-dideoxy-D-arabinitol and 2(R),5(R)-bis(hydroxymethyl)-3(R),4(R)-dihydroxypyrrolidine
摘要:
This work examined the application of rabbit muscle aldolase (RAMA) to stereospecific carbon-carbon bond formation in the preparation of carbohydrates containing amino groups. Several alpha-amino aldehyde equivalents were evaluated as substrates for RAMA and for their synthetic utility in transformations following the aldol reaction. This methodology is illustrated by the syntheses of the pyrrolidine alkaloids 1,4-dideoxy-D-arabinitol and 2(R),5(R)-bis(hydroxymethyl)-3(R), 4(R)-dihydroxypyrrolidine. The kinetic resolution of racemic aldehydes by RAMA and mild methods for transforming the amino equivalents into the desired amines are discussed briefly.
Process for the preparation of 2-hydroxymethyl-pyrolidine 3, 4-diols
申请人:——
公开号:US20040185539A1
公开(公告)日:2004-09-23
A process for the preparation of 2-hydroxymethyl-pyrrolidine-3,4-diols of the formulae comprising the steps of a) biooxidation of N-protected aminotetraols of the formula b) deprotection of the corresponding N-protected 5-amino-5-deoxy-pentulose c) hydrogenation of the corresponding 5-amino-5-deoxy-pentulose.
1
PROCESS FOR THE PREPARATION OF 2-HYDROXYMETHYL-PYROLIDINE-3,4-DIOLS
申请人:Lonza AG
公开号:EP1379676A2
公开(公告)日:2004-01-14
[EN] PROCESS FOR THE PREPARATION OF 2-HYDROXYMETHYL-PYROLIDINE-3,4-DIOLS<br/>[FR] PROCEDE DE PREPARATION DE 2-HYDROXYMETHYL-PYROLIDINE-3,4-DIOLS
申请人:LONZA AG
公开号:WO2002074737A2
公开(公告)日:2002-09-26
A process for the preparation of 2-hydroxymethyl-pyrrolidine-3,4-diols of the formulae comprising the steps of a) biooxidation of N-protected aminotetraols of the formula b) deprotection of the corresponding N-protected 5-amino-5-deoxy-pentulose c) hydrogenation of the corresponding 5-amino-5-deoxy-pentulose.
.alpha.-Amino aldehyde equivalents as substrates for rabbit muscle aldolase: synthesis of 1,4-dideoxy-D-arabinitol and 2(R),5(R)-bis(hydroxymethyl)-3(R),4(R)-dihydroxypyrrolidine
作者:Rebecca R. Hung、Julie Ann Straub、George M. Whitesides
DOI:10.1021/jo00012a015
日期:1991.6
This work examined the application of rabbit muscle aldolase (RAMA) to stereospecific carbon-carbon bond formation in the preparation of carbohydrates containing amino groups. Several alpha-amino aldehyde equivalents were evaluated as substrates for RAMA and for their synthetic utility in transformations following the aldol reaction. This methodology is illustrated by the syntheses of the pyrrolidine alkaloids 1,4-dideoxy-D-arabinitol and 2(R),5(R)-bis(hydroxymethyl)-3(R), 4(R)-dihydroxypyrrolidine. The kinetic resolution of racemic aldehydes by RAMA and mild methods for transforming the amino equivalents into the desired amines are discussed briefly.