Rb. Bates et al., DOLASTATINS .26. SYNTHESIS AND STEREOCHEMISTRY OF DOLASTATIN-11, Journal of the American Chemical Society, 119(9), 1997, pp. 2111-2113
The first synthesis of dolastatin 11, a potent antineoplastic agent fr
om the sea hare Dolabella auricularia, confirmed the proposed structur
e and established the last configuration in this natural product and i
n dolastatin 12, majusculamide C, and 57-normajusculamide C.