Encyclopedia of the Alkaloids: Volume 3 by John Glasby

By John Glasby

Volume three of the Encyclopedia of the Alkaloids covers the literature to the top of October 1976 and incorporates a huge variety of those compounds that have been found because the first volumes have been released in 1975. There are a few entries the place fresh paintings has led to new constructions being recommend or the place extra info concerning compounds were supplied. extra references to compounds given within the first volumes are marked with an asterisk. the chance has additionally been taken to supply a formulation index masking all 3 volumes. it's a nice excitement to thank Academician Professor S. Yu. Yunusov of the Institute of Chemistry on the college of Tashkent, Uzbekistan, for stating a couple of blunders within the earlier volumes and for kindly offering me with important targeted details of the alkaloids that have been remoted and studied by way of Soviet chemists over many years.

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Nauk. Uzbek SSR, 10, 17 (1958) ALKALOID CS-4 A second minor component of the alkaloidal extract from Convolvulus subhirsutus Rgl. , this base forms colourless crystals when purified by recrystallization from Me 2 CO. It may be separated from the preceding alkaloid by chromatographic techniques. Yunusov, Shakirov, Plekhanova, Dokl. Akad. Nauk. Uzbek SSR, 10, 17 (1958) ALKALOID CV-A C23H27N04 One of two closely related alkaloids isolated from Cynanchum vincetoxicum, 40 this base contains three methoxyl and one hydroxyl group in the molecule.

Few other details of this base have been reported. , yields this alkaloid which forms colourless crystals from Me 2 CO. The structure is still unknown. , this base occurs only in small amounts and has not been fully investigated. Yunusov, Yunusov, Khim. Prir. p. 275-6°C (dry). Convolvulus subhirsutus Rgl. et Schmalh. furnishes two minor alkaloids which have been investigated by Russian workers. p. 214°C. The structure has not yet been determined. Yunusov, Shakirov, Plekhanova, Dokl. Akad. Nauk.

This alkaloid is separated from the accompanying bases by thin-layer chromatography and purified on a silica gel column. 5° (H 2 0). Neither the empirical formula nor the structure are known. ,Rev. Real. Acad. Cienc. Exactus. Fis. , Madrid, 65, 499 (1971) 30 ALKALOID BL-B The second minor alkaloid isolated from Baccharis linearis forms colourless crystals having the above melting point. , Rev. Real. Acad. Cienc. Exactus. Fis. 4° (H 20). Real. Acad. Cienc. Exactus. Fis. , Madrid, 65, 499 (1971) ALKALOID BP-I C24H29N03 Meo Boehmeria platyphylla, a member of the Urticacaea, yields this minor alkaloid which is isolated with cryptopleurine by adsorption on an alumina column and elution with C 6 H 6 -CHC1 3.

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