Isofuranonaphthoquinones from ventilago maderaspatana
作者:T. Hanumaiah、G.S.R. Rao、C.P. Rao、K.V.J. Rao、Heather J. Cowe、Philip J. Cox、R.Alan Howie、David S. Marshall、Ronald H. Thompson
DOI:10.1016/s0040-4020(01)96511-1
日期:1985.1
From the root bark of Ventilago maderaspatana (Rhamnaceae) five isofuranonaphthoquinones have been isolated. Ventilone-A is 4,9-dihydro-5,8-dihydroxy-6,7-methylenedioxy-1-methylnaphtho[2,3-c] furan-4,9-dione and B is the 5-methyl ether. Ventilone-C has the structure 1,3,4,9-tetrahydro-8-hydroxy-5-methoxy-6, 7-methylenedioxy-1-methylnaphtho[2,3-c]furan-4,9-dione, D is the isomeric 8-methyl ether, and