First Total Synthesis of the Antitumor Compound (−)-Kazusamycin A and Absolute Structure Determination
摘要:
The first total synthesis of kazusamycin A, a potent antitumor compound from an actinomycete, has been achieved, and its absolute structure was determined. Paterson's stereoselective aldol reaction was successfully applied to construct the contiguous chiral centers by using an originally designed optically active 2-acyl-1,3-propanediol derivative.
The absolute stereochemistry of the C21C34 fragment 2 of aplyronine A (1), a potent antitumor substance of marine origin, was determined by enantioselective synthesis.