Synthesis of the four enantiomers of diethyl 1,2-di(N-Boc-amino)propylphosphonates
摘要:
A simple and efficient synthetic strategy to all four enantiomerically pure diethyl 1,2-di(N-Boc-amino) propylphosphonates has been elaborated starting from the corresponding N-[(R)-(1-phenylethyl)]aziridine-(2S)- and N-[(S)-(1-phenylethyl)]aziridine-(2R)-carboxaldehydes, employing a one-pot three-components Kabachnik-Fields reaction followed by the hydrogenolytic removal of the chiral auxiliary and aziridine ring opening with simultaneous protection of the amino groups as the N-Boc derivatives. (C) 2017 Elsevier Ltd. All rights reserved.
A new synthesis of aziridine-2-carboxylates: Reaction of hexahydro-1,3,5-triazines or N-methoxymethylanilines with alkyl diazoacetates in the presence of lewis acid
作者:Hyun-Joon Ha、Jang-Min Suh、Kyung-Ho Kang、Young-Gil Ahn、Oksoo Han
DOI:10.1016/s0040-4020(97)10358-1
日期:1998.1
Aziridine-2-carboxylates were prepared from the reaction of hexahydro-1,3,5-triazines or N-methoxymethylanilines with alkyl diazoacetates in the presence of Lewis acid catalyst in high yield. (C) 1997 Elsevier Science Ltd. All rights reserved.
Synthesis and configurational assignment of an unusual bicylic amino acid
作者:Saleem Farooa、William E. Swain、Richard Daeppen、Grety Rihs
DOI:10.1016/s0957-4166(00)82312-5
日期:1992.1
A synthesis leading to the racemic bicyclic amino acid 1 is described. Similarly, the two enantiomers of 1 have been synthesised and their configuration determined.
Synthesis of four enantiomers of 2-acetamido-1-hydroxypropylphosphonates
作者:Andrzej E. Wróblewski、Joanna Drozd
DOI:10.1016/j.tetasy.2007.04.021
日期:2007.5
Enantiomerically pure diethyl 2-acetamido-1-hydroxypropylphosphonates were synthesised from N-[(R)-(1-phenylethyl)]aziridine-(2S)- and N-[(S)-(1-phenylethyl)]aziridine-(2R)-carboxaldehydes via phosphonylation followed by acetylation of the hydroxy groups and the simultaneous hydrogenolytic cleavage of the aziridine rings and the removal of the chiral auxiliaries. In addition, enantiomerically pure diethyl (1S,2R)- and (1R,2S)-2-amino-1-hydroxypropylphosphonates (the phosphonate analogues of isothreonine) were separated. (C) 2007 Elsevier Ltd. All rights reserved.