Pyrrolizidine Alkaloids from Parsonsia laevigata in Okinawa Island (Studies on Parsonsia. V).
نویسندگان
چکیده
منابع مشابه
rolizidine alkaloids in Parsonsia laevigata ALSTON and phenanthroindolizidine alkaloids in Tylophora tanakae
Asclepiadaceous plants, we have described that the pyrrolizidine alkaloids in Parsonsia laevigata ALSTON and phenanthroindolizidine alkaloids in Tylophora tanakae MAXIM. act as an oviposition-activating substance for Danaid butterflies, Idea leuconoe and Ideopsis similis, respectively. Since Parantica sita lays eggs on the leaves of Marsdenia tomentosa MORREN et DECAISNE and cyclitols such as c...
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Background and objectives: The plants belonging to the genus Heliotropium L. (Boraginaceae) are the main sources of toxic pyrrolizidine alkaloids (PAs). In the present study, we have investigated the PAs of the aerial parts of Heliotropium transoxanum Bunge, a perennial species native to Iran. Methods: Silica gel column chromatography and silica gel PTLC were applied ...
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متن کاملPyrrolizidine alkaloids from Lithospermum canescens Lehm.
Seven pyrrolizidine alkaloids (PAs) have been isolated from Lithospermum canescens and their structures determined by spectroscopical methods. Besides the known lycopsamine, O7-acetyl-lycopsamine and O7-acetylintermedine four new PAs were found. Their structures are O7-(3-hydroxy-3-methyl-butanoyl)-O9-(+)-trachelanthoyl-heliotridine (= O7-(3-hydroxy-3-methyl-butanoyl)-rinderine = canescine), O7...
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ژورنال
عنوان ژورنال: Chemical and Pharmaceutical Bulletin
سال: 1991
ISSN: 0009-2363,1347-5223
DOI: 10.1248/cpb.39.1576