Total synthesis of cryptophycins. Revision of the structures of cryptophycins A and C

RA Barrow, T Hemscheidt, J Liang, S Paik…

Index: Barrow, Russell A.; Hemscheidt, Thomas; Liang, Jian; Paik, Seunguk; Moore, Richard E.; Tius, Marcus A. Journal of the American Chemical Society, 1995 , vol. 117, # 9 p. 2479 - 2490

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Citation Number: 185

Abstract

Abstract: The convergent total synthesis of cryptophycins C and D is described. It has been shown that in both natural products the absolute configuration of the a-amino acid corresponds to the D-series. The structural assignment for cryptophycin C has been corrected to reflect this fact. Since the structure of cryptophycin A has been correlated to cryptophycin C, the chloro-0-methyltyrosine unit in cryptophycin A has the D-configuration.