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Structure studies of new antisweet constituents from Gymnema sylvestre
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.
- A. Dongmo, T. Miyamoto, K. Yoshikawa, S. Arihara, M. Lacaille‐Dubois
- ChemistryPlanta medica
- 1 September 2007
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…
Phenylpropanoids and other secondary metabolites from fresh fruits of Picrasma quassioides
Potent inhibitors of histamine release: polyhydroxylated sterols from the Okinawan soft coral Sinularia abrupta.
- N. Shoji, A. Umeyama, M. Takei, S. Arihara
- Biology, MedicineJournal of pharmaceutical sciences
- 1 May 1994
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…
Studies on the Constituents of Gynostemma pentaphyllum MAKINO. I. Structures of Gypenoside I-XIV