Synthesis and conformational features of topographically constrained designer chimeric amino acids: The β-isopropyl phenylalanines
摘要:
All four optically pure isomers of the highly conformationally constrained novel chimeric amino acid, beta-isopropylphenylalanine or beta-phenylleucine, were asymmetrically synthesized in five to six steps in 20-25% overall yield. Computer-assisted molecular modeling revealed that the beta-isopropyl group in these chimeric amino acids plays the dominant role in determining the most favorable side chain conformations. (C) 1997 Elsevier Science Ltd.
Synthesis and conformational features of topographically constrained designer chimeric amino acids: The β-isopropyl phenylalanines
摘要:
All four optically pure isomers of the highly conformationally constrained novel chimeric amino acid, beta-isopropylphenylalanine or beta-phenylleucine, were asymmetrically synthesized in five to six steps in 20-25% overall yield. Computer-assisted molecular modeling revealed that the beta-isopropyl group in these chimeric amino acids plays the dominant role in determining the most favorable side chain conformations. (C) 1997 Elsevier Science Ltd.