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Triterpenoids of the gramineae
Abstract The distribution of triterpenes was studied in 56 species of the Gramineae and their wide occurrence confirmed. Twenty-eight triterpenes were identified and triterpene methyl ethers,Expand
Chemical and toxicological studies on bracken fern, Pteridium aquilinum var. latiusculum II. Structures of pterosins, sesquiterpenes having 1-indanone skeleton.
The structures of twenty-four sesquiterpenes isolated from the young fronds were disclosed by chemical and physical methods. The stereostructures were established as 1-22 by degradation andExpand
Four New Azaphilones from Chaetomium globosum var. flavo-viridae
Four new azaphilones of angular type, named chaetoviridins A, B, C and D, were isolated from the culture of Chaetomium globosum var. flavo-viridae. The absolute configuration of chaetoviridin A wasExpand
Correlation between effects of 24 different cytochalasins on cellular structures and cellular events and those on actin in vitro
To compare the effects of cytochalasins on the cellular level with those on the molecular level, 24 cytochalasins, 20 natural compounds and 4 derivatives, were used. The following effects were testedExpand
Chemical and toxicological studies on bracken fern, Pteridium aquilinum var. latiusculum. I. Introduction, extraction and fractionation of constituents, and toxicological studies including
Toxicity tests to experimental animals and cultured HeLa cells were performed on the extracts of young fronds of bracken, Pteridium aquilinum var. latiusculum, aiming the isolation andExpand
Chemical and Toxicological Studies on Bracken Fern, Pteridium aquilinum var. latiusculum. III. Further Characterization of Pterosins and Pterosides, Sesquiterpenes and the Glucosides having
Four pterosins, illudoid sesquiterpenes, and nine pterosides, the glucosides, were isolated from the rhizomes of Pteridium aquilinum var. latiusculum. The stereostructures of the new compounds wereExpand
Chemical assay of ptaquiloside, the carcinogen of pteridium aquilinum, and the distribution of related compounds in the pteridaceae
Abstract A chemical assay of ptaquiloside, the major carcinogen of Pteridium aquilinum , based on two-dimensional TLC-densitometry, was devised. The contents of ptaquiloside and related compounds inExpand
The structures of arundoin, cylindrin and fernenol : Triterpenoids of fernane and arborane groups of imperata cylindrica var. koenigii☆
Abstract Five triterpenoids, arundoin (Ia), cylindrin (IIa), fernenol (Ib), isoarborinol (IIb) and simiarenol (IVa), have been isolated and the structures of Ia, IIa and Ib determined. TheExpand
CHEMICAL AND TOXICOLOGICAL STUDIES ON BRACKEN FERN, PTERIDIUM AQUILINUM VAR. LATIUSCULUM. IV. SURVEYS ON BRACKEN CONSTITUENTS BY MUTAGEN TEST
Among the twenty-three compounds isolated from bracken, kaempferol showed noticeable mutagenicity to Salmonella typhimurium, strains TA 100 and TA 98, with S-9 mix. With pretreatment ofExpand
Mutagenicity of anthraquinones in the Salmonella preincubation test.
The mutagenicities of 15 naturally occurring anthraquinones were examined in Salmonella typhimurium strains TA98, TA100 and TA2637 by the preincubation method. 7 of the 15 compounds tested, i.e.,Expand
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