Rhizomes Of Hedychium Coronarium Research Articles

Medical ethnobotany of the Siddis of Uttara Kannada district, Karnataka, India

A total of 98 medicinal preparations, involving 69 species of plants, used by the Siddis of Uttara Kannada in the state of Karnataka is described in this paper based on an ethnomedical field study. The finding includes 40 hitherto unknown medicinal uses of known medicinal plants. Among these, the use of the stem sap of Calamus thwaitesii as an antifertility drug, and the use of the flowers of Ichnocarpus frutescens and the rhizome of Hedychium coronarium in the treatment of diabetes are noteworthy. The knowledge of medicinal plants of the Siddis is distinct from that of another tribe of the same locality, the Gowlis.

Labdane diterpenes from rhizomes of Hedychium coronarium

Three new labdane diterpenes were isolated together with four known diterpenes [(E)-labda-8(17),12-diene-15,16-dial, coronarin B and D, and isocoronarin D] from rhizomes of Hedychium coronarium. The structures of the new compounds were determined by spectroscopic evidence to be labda-8(17), 11,13-trien-15(16)-olide, an ester of labda-8(17), 11,13-trien-15-al-16-oic acid and isocoronarin D, and 7β-hydroxycoronarin B.

14,15,16-Trinorlabda-8(17),11-(E)-dien-13-al: A Trinorlabdane Diterpene from the Rhizome ofHedychium coronarium

Abstract The rhizomes of Hedychium coronarium (Zingiberaceae) have yielded two new diterpenes which have been identified by spectroscopic methods, notably long-range heteronuclear coupling (HMBC). Coronarin-D methyl ether is a labdane diterpene typical of those previously isolated from this species. The second compound, identified as 14,15,16-trinorlabda-8(17),11-(E)-dien-13-al, appears to be an unusual trinorditerpene catabolite which could be formed by degradation of the normal labdanes produced by this species.

(+)-14β-Hydroxylabda-8(17),12-dieno-16,15-lactone [(+)-Isocoronarin-D]: a New Diterpene From Hedychium coronarium (Zingiberaceae)

An investigation of the rhizome of Hedychium coronarium ( Zingiberaceae ), collected in the Kathmandu Valley, Nepal, has yielded coronarin -D, coronarin -D ethyl ether, coronarin -E, and a new diterpene identified as (+)-14β-hydroxylabda-8(17),12-dieno-16,15-lactone, assigned the trivial name of isocoronarin-D. The structure of isocoronarin-D (3) was determined by spectroscopic and X-ray crystallographic studies.

Diterpenes from rhizomes of Hedychium coronarium.

Two new labdane-type diterpenes, coronarin E and coronarin F containing borneol in the molecule, were isolated from the rhizomes of the Brazilian medicinal plant, Hedychium coronarium (Zingiberaceae).