Triterpenes and Sterol from Tabernaemontana pandacaqui poir.

Bioactivities of triterpenes and a sterol from Syzygium samarangense.

Cycloartenyl stearate (1a), lupenyl stearate (1b), sitosteryl stearate (1c), and 24-methylenecycloartanyl stearate (1d) (sample 1) from the air-dried leaves of Syzygium samarangense exhibited potent analgesic and anti-inflammatory activities at effective doses of 6.25 mg/kg body weight and 12.5 mg/kg body weight, respectively. Sample 1 also exhibited negligible toxicity on zebrafish embryonic t...

Triterpenes from Mimusops elengi.

Pentacyclic triterpenes (1) and (2) have been isolated from Mimusops elengi and assigned structures 3beta,6beta,19alpha,23-tetrahydroxy-urs-12-ene and 1beta-hydroxy-3beta-hexanoyllup-20 (29)-ene-23, 28-dioic acid, respectively, on the basis of spectroscopic studies including 2D-NMR. The compound 1 showed moderate inhibiting activity against beta-glucuronidase enzyme

Monogagaine, a Novel Dimeric Indole Alkaloid from Tabernaemontana chippii and Tabernaemontana dichotoma [1]

Tabernaemontana chippii and Tabernaemontana dichotoma [1] Teris A. van Beek*, Peter P. Lankhorst, Robert Verpoorte, Georges Massiot, Roel Fokkens, Cornelis Erkelens, Premila Perera, and Cecilia Tibell a Department of Pharmacognosy, Gorlaeus Laboratories, P .O.Box 9502, 2300 R A Leiden, The Netherlands b Depar tment of Organic Chemistry, Leiden, The Netherlands c Faculte de Pharmacie, Reims, Fra...

triterpenes from euphorbia denticulata

Lanostane Triterpenes from the Fungus Pisolithus tinctorius

Um novo triterpeno, 3β,22ξ,23ξ-triidróxi-22ξ-acetóxi-24-metil-lanosta-8,24(28)-dieno-31-al, denominado pisosteral, e quatro triterpenos lanostanos conhecidos, 3β,22ξ,23ξ-triidróxi-22ξ-acetóxi24-metil-lanosta-8,24(28)-dieno (pisosterol), 3α,22ξ,23ξ-triidróxi-22ξ-acetóxi-24-metil-lanosta8,24(28)-dieno (3-epi-pisosterol), 3β,22ξ,23ξ-triidróxi-23ξ-acetóxi-24-metil-lanosta-8,24(28)-dieno e 3β,22ξ,23...