13C NMR spectra of pentacyclic triterpenoids--a compilation and some salient features

Therapeutic orchids: traditional uses and recent advances--an overview.

Natural phenanthrenes and their biological activity.

Production of bioactive triterpenes by Eriobotrya japonica calli.

Nine triterpene acids, viz., six of the ursane type, ursolic acid (1), corosolic acid (2), 3-epicorosolic acid (3), pomolic acid (4), tormentic acid (5) and hyptadienic acid (6), and three of the oleanane type, oleanolic acid (7), augustic acid (8) and 3-epimaslinic acid (9), among which 1 constituted the most predominant triterpene acid, were isolated and identified from ethanol extracts of the leaves of red perilla [Perilla frutescens (L.) Britton var. acuta Kudo] and green perilla [P. frutescens (L.) Britton var. acuta Kudo forma viridis Makino]. These eight compounds, 1, 2, 4–9, were evaluated for their inhibitory effects on 12-O-tetradecanoylphorbol-13-acetate (TPA)-induced inflammation (1 μg/ear) in mice. All the compounds tested showed a marked anti-inflammatory effect, with a 50% inhibitory dose (ID50) of 0.09–0.3 mg per ear. In addition, an evaluation against the Epstein-Barr virus early antigen (EBV-EA) activation induced by TPA showed five compounds, 1–3, 5 and 9, with a potent inhibitory effec...

https://www.tandfonline.com/doi/pdf/10.1271/bbb.68.85

Triterpene Acids from the Leaves of Perilla frutescens and Their Anti-inflammatory and Antitumor-promoting Effects

An A-ring contracted triterpenoid from Hyptis suaveolens

Bibenzyls and phenanthrenoids of some species of orchidaceae

The structures of two new 1,4-phenanthraquinones, ochrones A [1] and B [2] from the orchid, Coelogyne ochracea, have been established from spectroscopic evidence

N. S. Prakasa Rao

Papers

An A-ring contracted triterpenoid from Hyptis suaveolens

Bibenzyls and phenanthrenoids of some species of orchidaceae

Ochrone A, a novel 9,10-dihydro-1,4-phenanthraquinone from Coelogyne ochracea

Anisofolin-A, a New Acylated Flavone Glucoside from Anisomeles ovata R. Br.

Amoenumin, A 9,10-dihydro-5H-phenanthro-(4,5-b,c,d)-pyran from Dendrobium amoenum