백선피의 성분 Fraxinellone의 백금산 촉매에 의한 환원물질의 구조 = Structures of Fraxinellone Derivatives by Hydrogenation with PtO2 in HOAc

다국어 초록 (Multilingual Abstract)

Two fraxinellone-based hydrogenated derivatives were prepared from fraxinellone, a well-known degraded limonin,via catalytic hydrogenation in the presence of PtO2 in HOAc. Their structures were confirmed as (3S,3aR,3'R)-3a,7-dimethyl-3-(tetrahydrofuran-3-yl)-3a,4,5,6-tetrahydroisobenzofuran-1(3H)-one and (3S,3aR,2'R)-3-((R)-1-hydroxybutan-2-yl)-3a,7-dimethyl-3a,4,5,6-tetrahydroisobenzofuran-1(3H)-one on the basis of 2D NMR assignments. The 13C NMR assignments of two quaternary carbons in the α,β-unsaturated carbonyl moiety of γ-butyrolactone core of fraxinellone should be revised.

참고문헌 (Reference)

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