Jw. Morzycki et I. Jastrzebska, Novel transformation of 23-bromosapogenins. Synthesis of (22S,23R)-22-hydroxy-23,26-epoxyfurostanes, TETRAHEDR L, 42(34), 2001, pp. 5989-5991
(22S,23S)-23-Bromosapogenins undergo rearrangement to the (22S,23R)-22-hydr
oxy-23,26-epoxyfurostanes during alkaline hydrolysis. An efficient degradat
ion procedure of sarsapogenin via the corresponding bisfuran to the C-22 la
ctone is described. (C) 2001 Elsevier Science Ltd. All rights reserved.