Syntheses of cis- and trans-Jamtine and Their N-Oxides via a Benzyl Configuration-Inversion Approach
作者:Huaiji Zheng、Zhigang Liu、Zhengshen Wang、Yujie Li、Qiang Zhang、Jin-Ming Gao
DOI:10.1055/s-0037-1610745
日期:2020.3
an oxidation/reduction approach. The N-oxide derivatives of the jamtine isomers were also synthesized and identified by X-ray crystallographic analysis. Additionally, a density functional theory calculation for the four possible N-oxide structures was exploited to gain further insight into the structure of the natural product in comparison to those of the synthetic N-oxides, because the NMR data of
报道了四氢异喹啉生物碱果酱及其差向异构体的新合成。合成策略取决于一锅共轭还原/罗宾逊环化序列和通过氧化/还原方法进行的有效苄基构型反转。Jamtine 异构体的 N-氧化物衍生物也被合成并通过 X 射线晶体学分析进行鉴定。此外,利用四种可能的 N-氧化物结构的密度泛函理论计算,与合成 N-氧化物的结构相比,进一步深入了解天然产物的结构,因为合成衍生物的 NMR 数据不匹配那些报告的天然果酱 N-氧化物。