[Investigation on the plant origin and commodity of Chinese drug bixie].

An investigation has been made on the Chinese drug Bixie available in drug market, its folk uses and plant origin in different districts in China. The results reveal that the drug Bixie presently used in different regions in China are derived from 24 species belonging to genus Dioscorea (Family Dioscoreaceae); genus Smilax and Heterosmilax (Family Liliaceae).

[Growth regularities of yujin (Curcuma longa L.)].

Based on the characteristics of leaf, root and tuber growth as well as dry matter accumulation, the ontogeny of Yujin is divided into 4 stages. The growth and correlation among the leaf, root and tuber as well as accumulation of essential oils and curcumins have also been studied.

[Scanning electron microscopic identification of hairs on surface of fruits and seeds of Chinese medicinal plants].

A comparative identification of hairs on surfaces of fruits and seeds of some Chinese medicines has been made, and a key to 13 kinds of hairs has been compiled. According to the characters of hairs, it is possible to identify some Chinese drugs in powder form.

[Production layout of endemic and superior Chinese medicinal materials in Sichuan].

In this paper, the climatic ecological adaptabilities of 15 kinds of genuine Chinese medicinal materials in Sichuan are quantitatively illustrated by means of Fuzzy sets and some tentative ideas about their rational production layout are advanced for the first time.

[Structure of lamiophlomiol C].

A new highly oxygenated iridoid, lamiophlomiol C isolated from the alcohol soluble fraction of the roots of Lamiophlomis rotata (Labiatae), was shown to have the molecular formula C11H14O7. On the basis of UV, IR, MS and NMR spectroscopic data, particularly X-ray crystallographlic analysis, structure I has been assigned to this iridoid.

[Studies on the antimalarial action of gelatin capsule of Artemisia annua].

The pharmacological and clinical effects of gelatin capsule of Artemisia annua (GCAA) were investigated. The results revealed that the LD50 was 162.5 +/- 10.

[Studies on the sweet principles from the leaves of Cyclocarya paliurus (Batal.) Iljinskaya].

Four intensely sweet compounds (I-IV) were obtained from the leaves of Cyclocarya paliurus (Batal.) Iljinskaya. The structure of compound I was elucidated by chemical and spectroscopic methods as 20,24-epoxy-dammarane-(3 beta,12 beta,24R)-12-O-alpha-L-rhamnopyranosyl-25- hydroxyl-3-O-alpha-(5'-O-acetyl)-L-arabinofuranoside.

[High-yield agronomic measures of Curcuma longa L].

A method of orthogonal conic combinatorial design has been employed in the study of high-yield agronomic measures of C. longa. The results show that by increasing plants/mu and postponing sowing date, the yield is 50% higher than before, mathematical model of yield on plants/mu and sowing date were established, which can be used to predict the yield and explore optimal agronomic measures.

[Systematic exploitation of regional resources of Chinese herbal drugs].

This paper advances the concept of regional resources of Chinese herbal drugs and the policy-making pattern for the systematic exploitation of these resources. The AHP is used for the first time in the systematic study on the resources of Chinese herbal drugs in the Qingchenghou mountains, Sichuan, with the desired result that proves beneficial to the spheres of society, economy and ecology.

[Studies on varietal resources of Chinese medicinal plants and their preservation].

The paper reviews the status of varietal resources of Chinese medicinal plants in China. The existing problems are analysed. Characteristics of these resources are dealt with.

[Studies on the chemical constituents from the roots of Lamiophlomis rotata (Benth.) Kudo, a medical plant in Xi-Zang (Tibet)].

Two new highly oxygenated iridoids, named lamiophlomiol A and B, were isolated from an alcohol extract of the roots of Lamiophlomis rotata (Labiatea) by silica gel G column chromatography. Lamiophlomiol A and B are two epimers. Their structures were elucidated to be Ia and Ib with spectroscopic and chemical analysis.

[Regeneration of bark of Chinese medicinal plants after large area girdling].

This paper deals with the method of girdling, conditions of girdling, regeneration mechanism, and factors promoting bark regeneration. The results show that girdling is an effective way of tackling the problem of deficiency of woody medicinal plants in China.

[Studies on the active constituents of Momordica charantia L].

Five compounds were isolated from the seeds of Momordica charantia. This paper reports their structure determination by spectral (IR, UV, HNMR, CNMR, and MS) and chemical methods. The structures of I, II, III, IV and V were elucidated as vacine, mycose, 3-O-(beta-D-glucopyranosyl)-24 beta-ethyl-5 alpha-cholesta-7, trans-22E, 25 (27)-trien-3 beta-ol, momorcharaside A and momorcharaside B respectively.

HPLC analysis of montanoa species for pharmacologically active constituents1.

A reversed phase HPLC method was developed for the qualitative and quantitative analysis of selected biologically active diterpenoid constituents of methanolic and hot water extracts of some MONTANOA species.