A. Suksamrarn et al., NATURALLY-OCCURRING 20,26-DIHYDROXYECDYSONE EXISTS AS 2 C-25 EPIMERS WHICH EXHIBIT DIFFERENT DEGREES OF MOLTING HORMONE-ACTIVITY, Tetrahedron, 54(48), 1998, pp. 14565-14572
20,26-Dihydroxyecdysone (20,26-ECD) isolated from Vitex canescens, V.
glabrata and V. pinnata has been shown to exist as two C-25 epimers. S
ynthesis and separation of the two epimers were accomplished and they
exhibited different degree of moulting hormone activity in the Musca a
ssay. (C) 1998 Elsevier Science Ltd. All rights reserved.