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KMID : 0370219970410050554
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Yakhak Hoeji
1997 Volume.41 No. 5 p.554 ~ p.558
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Sesquiterpene Pyridine Alkaloids from Euonymus japonia
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류재하/Ryu JH
은진희/이소영/장준식/박만기/박정일/한용남/한병훈/Eun JH/Lee SY/Chang JS/Park MK/Park JH/Han YN/Han BH
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Abstract
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Two alkaloidal components were isolated from the ether soluble part of the MeOH extract of the root bark of Euonymus japonica. Their structures were elucidated by the spe ctroscopic analylses as the sesquiterpene pyridine alkaloids derived from polyester sesquiterpenes which are characteristically detected in Celastraceae plants. These include macrocycle formed by two ester linkages between dihydro-beta-agarofuran nucleus and pyridinic dibasic acid(compound 1:evoninic acid, compound 2:wilfordic acid). The structure of compound 1[C47H50N2017, mp 161~163oC. [alpha]D28=+31.6o(c, 0.1 in EtOH)] was determined as novel structure named as euojaponine N, and compound 2[C48H57NO18, mp 142~145oC, [alpha]D27=+27.0o(c, 0.1 in EtOH)] was identified as ebenifoline W-I reported from Maytenus ebenifolia.
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