A combined physicochemical and computational investigation of the inclusion behaviour of 3-(1-Naphthyl)-D-alanine Hydrochloride insights into β-Cyclodextrin
Unusual amino acids III. Asymmetric synthesis of 3-arylalanines
摘要:
21 (Z)-alpha-N-benzoylamino-beta-arylacrylic acids and their esters were prepared by known procedures and hydrogenated to the corresponding optically active alpha-benzoyl-beta-arylalanine derivatives with optical yields in the range of 82-95% ee using the cationic rhodium complex of ''PROPRAPHOS'' as the chiral catalyst No electronical influences of the substituents at the aryl moiety on the enantioselectivity were observed but a sterical one, proved by X-ray crystallographic analysis and computer-aided modellings. Deacylation of the hydrogenated spezies produced the hydrochlorides of the 3-arylalanines attended by a partial racemisation In this case the hydrogenation of urethane type protected dehydroaminoacid derivatives seems to be the alternative.
21 (Z)-alpha-N-benzoylamino-beta-arylacrylic acids and their esters were prepared by known procedures and hydrogenated to the corresponding optically active alpha-benzoyl-beta-arylalanine derivatives with optical yields in the range of 82-95% ee using the cationic rhodium complex of ''PROPRAPHOS'' as the chiral catalyst No electronical influences of the substituents at the aryl moiety on the enantioselectivity were observed but a sterical one, proved by X-ray crystallographic analysis and computer-aided modellings. Deacylation of the hydrogenated spezies produced the hydrochlorides of the 3-arylalanines attended by a partial racemisation In this case the hydrogenation of urethane type protected dehydroaminoacid derivatives seems to be the alternative.
A combined physicochemical and computational investigation of the inclusion behaviour of 3-(1-Naphthyl)-D-alanine Hydrochloride insights into β-Cyclodextrin
作者:Modhusudan Mondal、Shatarupa Basak、Biswajit Ghosh、Salim Ali、Baishali Saha、Kangkan Mallick、Kanak Roy、Mahendra Nath Roy