A novel method for the synthesis of chiral alpha-amino acids has been developed where the acid functionality was constructed by oxidizing a hydroxymethyl group introduced by Evans' method in the alpha-position of an appropriate acid substrate and the amino part came from the amide of the original carboxyl group following a modified Hofmann rearrangement reaction. (C) 2002 Published by Elsevier Science Ltd.
A novel method for the synthesis of chiral alpha-amino acids has been developed where the acid functionality was constructed by oxidizing a hydroxymethyl group introduced by Evans' method in the alpha-position of an appropriate acid substrate and the amino part came from the amide of the original carboxyl group following a modified Hofmann rearrangement reaction. (C) 2002 Published by Elsevier Science Ltd.
The invention relates to compounds which are useful in the delivery of a wide variety of therapeutically useful molecules. In particular, the invention relates to compounds which are able to act as carriers for therapeutically useful molecules, and to pharmaceutical agents comprising these carriers. The compounds of the invention comprise a mono- or oligosaccharide, a lipidic moiety, and optionally a linker and/or a spacer. The pharmaceutical agents of the invention are particularly useful for oral administration.
Synthesis of chiral α-amino acids
作者:Tushar K Chakraborty、Animesh Ghosh
DOI:10.1016/s0040-4039(02)02433-4
日期:2002.12
A novel method for the synthesis of chiral alpha-amino acids has been developed where the acid functionality was constructed by oxidizing a hydroxymethyl group introduced by Evans' method in the alpha-position of an appropriate acid substrate and the amino part came from the amide of the original carboxyl group following a modified Hofmann rearrangement reaction. (C) 2002 Published by Elsevier Science Ltd.