The title terpene, C(30)H(46)O(3), is a 28,13β-lactone of oleanolic acid prepared with bis-muth trifluoro-methane-sulfonate (OTf), Bi(OTf)(3)·xH(2)O. All rings are trans-fused. The X-ray study shows the inversion of the orientation of 18-H in the lactonization reaction. A quantum chemical ab-initio Roothaan Hartree-Fock calculation of the equilibrium geometry of the isolated mol-ecule gives val...

Moronic acid is a pentacyclic triterpenoid made up of olean-18-ene with an oxo group at position 3 and carboxy 28. It's from oleanane hydride. A few investigations have demonstrated that wide scope pharmacological effects such as Antidiabetic activity, Anti-AIDS agents, Chemotherapeutic Virus lytic, Anti-HIV, Cytotoxic Anti-herpes, Antimicrobial Ribosome-loaded mRNAs.

Two new triterpenoid saponins have been isolated from leaves and flowers of Crotalaria madurensis Wight&Arn named; sophradiol 3-O-β-D-C1-glucopyranosyl-(1''→4')-O-β-DC1 glucuronopyranoside (3) and sophradiol 3-Oα-LC4rhamnopyranosyl (1'''→4'')-O-ß-D-C1 glucopranosyl-(1''→6')-O-ß-DC1-glucopyranoside (4) beside myo-inositol (1) and three other triterpene saponin their structures were established a...

Combretum imberbe is used widely in Africa inter alia for treating bacterial infections. In addition to four known triterpenoids, 1alpha,3beta-dihydroxy-12-oleanen-29-oic (1), 1-hydroxy-12-olean-30-oic acid (2), 3,30-dihydroxyl-12-oleanen-22-one (3), and 1,3,24-trihydroxyl-12-olean-29-oic acid (4), a new pentacyclic triterpenoid (1alpha,23-dihydroxy-12-oleanen-29-oic acid-3beta-O-2,4-di-acetyl-...

8-Aminoquinoline amides of 3-oxo-olean-12-en-28-oic acid and 3-oxo-urs-12-en-28-oic were obtained characterized by 1H, 13C-NMR single crystal X-ray analysis. The used triterpenoic acids are oxidized forms naturally occurring oleanolic ursolic acids. Such types derivatives known for their anticancer antiviral activities. On the other hand, 8-aminoquinoline frequently transition metal complexatio...

Four new triterpenoid saponins, ardisimamilloside C (1), 3-O-[alpha-L-rhamnopyranosyl-(1-->2)-beta-D-glucopyranosyl-(1-->4)-[beta -D-glucopyranosyl-(1-->2)]-alpha-L-arabinopyranosyl]-3beta,16al pha,28,30-tetrahydroxy-olean-12-en, ardisimamilloside D (2), 3-O-¿alpha-L-rhamnopyranosyl-(1-->2)-beta-D-glucopyranosyl-(1-->4)-[beta -D-glucopyranosyl-(1-->2)]-alpha-L-arabinopyranosyl]-3beta,15al pha,2...