Research progress of chromanone derivatives from Calophyllum / 中国中药杂志

Calophyllum plants have great pharmaceutical value. Some species of this genus are used in folk medicine to treat and cure diseases, such as toothache, rheumatism, diarrhea, chronic ulcers, skin infections, and wounds. The genus is known to be rich in chromanone derivatives, and some of these compounds have antiviral, antifungal, antibacterial, cytotoxic, and other activities. In order to come to a more complete understanding of chromanone derivatives and gain new bioactive constituents from Calophyllum, chemical structures, pharmacological activities, and biogenesis of chromanone derivatives from Calophyllum have been discussed in this review.

Benzylphenethylamine Alkaloids from the Bulbs and Flowers of Lycoris radiata / 中草药·英文版

Objective To study the benzylphenethylamine alkaloids from the bulbs and flowers of Lycoris radiata.Methods Alkaloids were isolated by various column chromatographic methods and their structures were identified by spectral data.Results Fifteen known benzylphenethylamine alkaloids were isolated and identified as lycoramine(1),O-demethyllycoramine(2),N-demethyllycoramine(3),galanthamine(4),lycorine(5),caranine(6),ungminorine(7),narciclasine(8),5-hydroxy-10-O-demethyl-homolycorine(9),hippeastrine(10),ungerine(11),hippeastrine N-oxide(12),O-demethylhaemanthamine(13),haemanthidine(14),and 8-demethoxybostasine(15).Conclusion Compound 15 is first isolated from the plants in Amaryllidaceae,compounds 3,6,9,and 11 are first reported from the plants in Lycoris Herb.,and compounds 2,7,and 14 are isolated from L.radiata for the fast time.The 13C-NMR data of compouds 3,7,and 12 are first reported in the present study.Furthermore,the galasine-type alkaloid is isolated from the plants of Lycoris Herb.for the first time.

Chemical constituents in roots of Osbeckia opipara / 中国中药杂志

<p><b>OBJECTIVE</b>To study the chemical constituents of the roots of Osbeckia opipara.</p><p><b>METHOD</b>Repeated column chromatography over silica gel, RP-18 and Sephadex LH-20, and preparative thin layer chromatography(PTLC) were used to isolate the compounds, whose structures were determined by spectroscopic methods by direct comparing spectral data with those reported references.</p><p><b>RESULT</b>From the MeOH extract of the roots O. opipara, twelve compounds were isolated and identified as follows: lasiodiplodin (1) , de-O-methyllasiodiplodin (2), 2, 3- dihydro-2-hydroxy-2, 4-dimethyl-5-trans-propenylfuran-3-one (3), integracin (4), 5alpha, 8alpha-epidioxy-(22E, 24R)-ergosta-6, 22-dien-3beta-ol (5), 3, 3', 4'-tri-O-methylellagic acid (6), 5-hydroxymethyl furaldehyde (7), vomifolio (8) , betulintic acid (9), 2alpha-hydroxyursolic acid (10), (24R)-stigmast-4-ene-3-one (11), and eugenitin (12).</p><p><b>CONCLUSION</b>Compounds 1-12 were isolated from O. opipara for the first time.</p>