M. Frederich et al., 3',4',5',6'-TETRADEHYDROLONGICAUDATINE-Y, AN ANHYDRONIUM BASE FROM STRYCHNOS-USAMBARENSIS, Phytochemistry, 48(7), 1998, pp. 1263-1266
A new bisindole alkaloid, tetradehydrolongicaudatine Y, has been isola
ted from the stem bark of Strychnos usambarensis collected from the Iv
ory Coast. Elucidation of its structure is based mainly on spectroscop
ic studies and places it among the relatively small collection of zwit
terionic indoloquinolizine alkaloids. (C) 1998 Elsevier Science Ltd. A
l rights reserved.