N. Murakami et al., TOTAL SYNTHESIS OF CALLYSTATIN-A, A POTENT CYTOTOXIC POLYKETIDE FROM THE MARINE SPONGE, CALLYSPONGIA-TRUNCATA, Tetrahedron letters, 39(16), 1998, pp. 2349-2352
A first total synthesis of callystatin A (1), a potent cytotoxic polyk
etide from the marine sponge Callyspongia truncata, has been achieved
by use of an E-selective Wittig olefination and asymmetric Evans aldol
condensation as the key reactions. Thus, the absolute stereostructure
of 1 previously established by us was confirmed. (C) 1998 Elsevier Sc
ience Ltd. All rights reserved.