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Lanostane triterpenoids and triterpene glycosides from the fruit body of Fomitopsis pinicola and their inhibitory activity against COX-1 and COX-2.
Two new lanostane triterpenoids (1, 2) and 10 new lanosteroid glycosides (3-12) have been isolated from the fruit bodies of Fomitopsis pinicola by NMR experiments and chemical methods.
New cycloartane triterpenoids from Passiflora edulis.
Three cycloartane triterpenes, cyclopassifloic acids E (1), F (2), and G (3), and their saponins, cyclopassiflosides VII (4), VIII (5), IX (6), X (7), and XI (8), were isolated from the leaf and stem
Flavonoids from Acacia pennata and their cyclooxygenase (COX-1 and COX-2) inhibitory activities.
Two new flavonoids quercetin 4'-O-alpha-L-rhamnopyranosyl-3-O-beta-D-allopyrnoside and apigenin 6-C-[2''-O-(E)-feruloyl- beta- D-glucopyranusyl]-8-C-beta -glucobyranoside are isolated from the leaves of Acacia pennata Willd.
Antisweet Natural Products. V. Structures of Gymnemic Acids VIII-XII from Gymnema sylvestre R. BR.
Five oleanane-type triterpenoid saponins, gymnemic acids VIII-XII as antisweet principles were isolated from the leaves of Gymnema sylvestre (Asclepiadaceae). Their structures were established on the
Potent inhibitors of histamine release: polyhydroxylated sterols from the Okinawan soft coral Sinularia abrupta.
A new polyhydroxylated steroid and known related compounds from the soft coral Sinularia abrupta have potently inhibited histamine release from rat peritoneal mast cells induced by anti-immunoglobulin E.
New oleanene triterpenoid saponins from Madhuca longifolia.
Four new oleanane-type triterpene glycosides, madlongisides A-D (1-4), were isolated from the seeds of Madhuca longifolia, and their structures were elucidated on the basis of extensive NMR