Kc. Nicolaou et K. Koide, SYNTHETIC STUDIES ON MADUROPEPTIN CHROMOPHORE .1. CONSTRUCTION OF THEARYL ETHER AND ATTEMPTED SYNTHESIS OF THE [7.3.0] BICYCLIC SYSTEM, Tetrahedron letters, 38(21), 1997, pp. 3667-3670
The aryl ether system of the maduropeptin chromophore artifact 1 was c
onstructed via an aldol type condensation (7 + 6, Schemes 1 and 2, 7 19, Scheme 4), but attempted synthesis and ring closure of aldehyde 2
5 (Scheme 4) to afford the enediyne core of 1 failed. (C) 1987 Elsevie
r Science Ltd.