Chemical constituents of Indian mangrove plants part IV -: Rhizophorin B:: A novel beyerane diterpenoid from the Indian mangrove plant Rhizophora mucronata
A novel beyerane diterpenoid has been isolated from the ethyl acetate extract of the Indian mangrove plant Rhizophora mucronata and its structure established as ent-3 beta ,20-epoxy-3 alpha ,18-dihydroxy-15-beyerene 2 by physical and spectral (H-1, C-13, DEPT,H-1-H-1 COSY,H-1-H-1 NOESY, HMQC, HMBC & MASS) data and chemical reactions.