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Pinguisane and dimeric pinguisane-type sesquiterpenoids from the Japanese liverwort Porella acutifolia subsp. tosana.

Hashimoto, T : Irita, H : Tanaka, M : Takaoka, S : Asakawa, Y
Phytochemistry. 2000 Mar;53(5):593-604
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Originally posted by liruijuan1836 at 2010-06-27 19:14:05:
Pinguisane and dimeric pinguisane-type sesquiterpenoids from the Japanese liverwort Porella acutifolia subsp. tosana.

Hashimoto, T : Irita, H : Tanaka, M : Takaoka, S : Asakawa, Y
Phytochemist ...

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Abstract
Two new pinguisane-type, three new Diels¡ÀAlder reaction-type dimeric pinguisane sesquiterpenoids and known sesqui and
diterpenoids were isolated from the ether extract of the Japanese liverwort Porella acutifolia subsp. tosana. Their absolute
stereostructures were established by a combination of extensive 2D-NMR, CD spectra, X-ray crystallographic analysis, modi®ed
Mosher's method and chemical correlation.
2000 Elsevier Science Ltd. All rights reserved.
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