@article{
 title = {New humulane-type sesquiterpenes from the liverworts Tylimanthus tenellus and Marchantia emarginata subsp. tosana.},
 type = {article},
 year = {2004},
 pages = {481-484},
 volume = {52},
 institution = {Faculty of Pharmaceutical Sciences, Tokushima Bunri University, Japan.},
 id = {9c3228fe-7989-3409-8a68-974060a6593f},
 created = {2011-05-20T17:26:16.000Z},
 file_attached = {false},
 profile_id = {b6c31fe8-61c6-3818-89a8-62873f3171f3},
 group_id = {7bdcaa0c-1528-351f-a09a-f8da52223946},
 last_modified = {2011-05-20T17:26:16.000Z},
 read = {false},
 starred = {false},
 authored = {false},
 confirmed = {true},
 hidden = {false},
 abstract = {The ether extract of the New Zealand liverwort Tylimanthus tenellus produced three new sesquiterpenes, together with (+)-3,11-eudesmadiene and (-)-4(15),11-eudesmadiene which were enantiomeric to those isolated from higher plants. The structures of the new sesquiterpenes were established by 2D NMR spectral data and/or X-ray crystallographic analysis. Those structures were shown to be humulane type sesquiterpene alcohol, and its esters of 2,4-hexadienedioic acid 3,4-dihydroxy-2,5-diphenyl-gamma-lactone. 1,6-Humuladien-10-ol was also isolated from Japanese liverwort Marchantia emarginata subsp. tosana. The absolute configuration of 1,6-humuladien-10-ol was determined by (1)H-NMR resolution of its diastereomeric methoxy-alpha-trifluoromethylphenylacetyl (MTPA) esters. It was shown to be (3S,10R)-1,6-humuladien-10-ol.},
 bibtype = {article},
 author = {Toyota, Masao and Omatsu, Ikuko and Braggins, John and Asakawa, Yoshinori},
 journal = {Chemical pharmaceutical bulletin},
 number = {4}
}

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