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한국자원식물학회 / v.7, no.1, 1994년, pp.29-34 
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( $C_{18}$ and $C_{19}$ Quassinoids from Eurycoma Longifolia ) |
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| Two new 1,2-seco-1-nor-6((5 $mapsto$ 10)abeo-picrasan-2,5-olideskeleton quassinoids, eurylactones A [1] and B [2], and two new $C_{19}$ skeleton quassinoids 3 and 4 were isolated from Eurycoma longifolia together with two known $C_{18}$ quassinoids 5 and 6. Their sttuctures were established by the spectral evidence.Many quassinoids have already been isolated (1-3) from the roots, wood, and leaves of Eurycoma longiolia Jack (Simaroubaceae) and have been used as a folk medicine insoutheast Asia. As part of a series of studies, we have further undertaken the chemicalinvestigation of the n-BuOH-soluble fraction of the MeOH extract and isolated two new1,2-seco-1-nor-6(5 $mapsto$ 10)abeo-picrasane skeleton quassinoids 1 and 2, which have beenknown only in shinjulactone B (4,5) and yadanfiolide (6), two new $C_{19}$-type quasslnolds3 and 4, and two known C18-type quassinoids 5 and 6. In this paper, the structureelucidation and biosenetic relation of these compounds are described. |
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한국자원식물학회지 / v.7, no.1, 1994년, pp.29-34
한국자원식물학회
ISSN : 1226-3591
UCI : G100:I100-KOI(KISTI1.1003/JNL.JAKO199411920277755)
언어 : 영어 |
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| 논문 제공 : KISTI 한국과학기술정보연구원 |
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