Lichen triterpenoids

Yosioka, L, H. Yamauchi, and I. Kitagawa Lichen Triterpenoids V. On the Neutral Triterpenoids of Pyxine endochrysina Nyl. Chem. Pharm. Bull. (Japan) 20, 502 (1972). [Pg.71]

Wilkins AL, Elix JA, Gaul KL, Moberg R (1989a) New hopane triterpenoids from lichens in the family Physciaceae. Aust J Chem 42 1415-1422 Wilkins AL, Elix JA, Gonzalez AG, Perez C (1989b) A one-and two-dimensional and C NMR study of some fernene triterpenoids. Aust J Chem 42 1185-1189 Wilkins AL, Elix JA, Whitton AA (1990) A one- and two-dimensional and C NMR study of some lichen triterpenoids of the pyxinol group. Aust J Chem 43 411-417... [Pg.472]

Yosioka T, Nakanishi T, Kitagawa I (1969a) Lichen triterpenoids. I. The structure of leucotylin. Chem Pharm Bull 17 279-290... [Pg.474]

Yosioka I, Nakanishi T, Yamauchi H, Kitagawa I (1972a) Lichen triterpenoids. III. The final conclusion on the stereostructure of zeorin and its correlation with leucotylin. The structure of isoleucotylin. Chem Pharm Bull 20 147-156... [Pg.474]

Yosioka I, Nakanishi T, Yamaki M, Kitagawa I (1972b) Lichen triterpenoids. IV. The structures of leucotylic acid and methyl isoleucotylate, an acid-induced isomer of methyl leucotylate. Chem Pharm Bull 20 487-501... [Pg.474]

Wilkins AL, Elix JA, Whitton AA (1990) A One- and Two-Dimensional H and C-NMR Study of some Lichen Triterpenoids of the Pyxinol Group. Aust J Chem 43 411... [Pg.274]

T. R. Seshadri (India, depsides), Y.J. Solberg (Norway, aliphatic compounds, steroids), W. Steglich (Germany, quinones), G. Sundholm (Sweden, xanthones, NMR), R. Tabacchi (Switzerland, synthesis of depsides and depsidones), K. Takahashi (Japan, usnic acid), Wachtmeister (Sweden, dibenzofuranes), A.L. Wilkins (New Zealand, triterpenoids), Y. Yamamoto (Japan, culture of lichens), I. Yoshimura (Japan, HPLC, culture of lichens), I. Yosioka (Japan, triterpenoids). [Pg.4]

Wilkins (1979) studied the MS of di- and tri-oxygenated stictane triterpenoids and their trimethylsUyl derivatives. A paper by Grigsby et al. (1974) deals with the MS of derivatives of polyporic acid, and Krause (1976) investigated the MS fragmentation of depsides, depsidones, usnic acid, terpenoids, fatty acids, di- and triglycerides and carbohydrates from lichens. Some papers deal with the MS of usnic acid and derivatives Kutney et al. (1974), Huneck and Schmidt (1980), and Schmidt et al. (1981). Ruef (1990) reported on the MS of numerous lichen xanthones. [Pg.22]

Brodo IM (1978) Changing concepts regarding chemical diversity in lichens. Lichenologist 10 1-11 Bruice TC, Kharasch N, Winzler RJ (1953) The synthesis of some new thyroxine analogs. J Org Chem 18 83-91 Bruun T (1954a) Triterpenoids in lichens. I. The occurrence of friedelin and epifriedelinol. Acta Chem Scand 8 71-75... [Pg.450]

Corbett RE, Wilkins AL (1977) Lichens and fungi. XV. Revised structures for hopane triterpenoids isolated from the lichen Pseudocyphellaria mougeotiana. Aust J Chem 30 2329-2332... [Pg.451]

Corbett RE, Heng CK, Wilkins AL (1976) Lichens and fungi. XIV. A revised structure for retigerane triterpenoids. Aust J Chem 29 2567-2570... [Pg.451]

Goh EM, Wilkins AL, Holland PT (1979) Structural elucidation of a new group of secostictane triterpenoids. J Chem Soc Perkin Trans 1 1560-1564 Gollapudi SR, Telikepalli H, Jampani HB, Mirhom YW, Drake SD, Bhattiprolu KR, van der Velde D, Mitscher LA (1994) Alectosarmentin, a new antimicrobial dibenzofuran lactol from the lichen, Alectoria sarmentosa. J Natural Prod 57 934-938 Gonzalez AG, Martin JD, Perez C (1974) Three new triterpenes from the lichen Xanthoria resendei. Phytochemistry 13 1547-1549... [Pg.458]

Wilkins AL (1977) The structure of a triterpenoid ketol from Cetraria nivalis. Phytochemistry 16 608-609 Wilkins AL (1980) Nephrin structure and occurrence in Nephroma species. Phytochemistry 19 696-697 Wilkins AL, Elix JA (1990) New fernene triterpenes from the lichen Pseudocyphellaria aurata. Aust J Chem 43 623-627... [Pg.472]

Yosioka I, Yamaki M, Kitagawa I (1966c) On the triterpenic constituents of a lichen Parmelia entotheiochroa Hue zeorin, leucotylin, leucotylic acid, and five new related triterpenoids. Chem Pharm Bull 14 804-807... [Pg.474]

Corbett and Wilkins (59) have revised the structures of the triterpenoids obtained from Pseudocyphellaria mougeotiana (52). Following the discovery of the presence of the known triterpenoids, 7 3,22-di-hydroxyhopane (491) and 15a,22-dihydroxyhopane (492), the structures of the remaining triterpenoids present in this lichen were reinvestigated. It was... [Pg.209]

Corbett, R. E., and A. L. Wilkins Lichens and Fungi. PartXII. Dehydration and Isomerisation of Stictane Triterpenoids. J. Chem. Soc. (London) Perkin Trans. I 1976, 857. [Pg.221]

Lichens and Fungi. XV. Revised Structures for Hopane Triterpenoids Isolated... [Pg.221]

Ronaldson, K. J., and A. L. Wilkins The Structure of Amphistictinic Acid a Triterpenoid Constituent of the Lichen Pseudocyphellaria amphisticta. Austral. J. Chem. 31, 215 (1978). [Pg.231]

Newly described triterpenoids from lichens are summarized in Table 10. [Pg.206]

Wilkins AL, Elix JA, Gaul KL, Moberg R (1989) New Hopane Triterpenoids from Lichens in the Family Physciaceae. Aust J Chem 42 1415... [Pg.274]

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