摘要
1976年苏联学者从 Petlium eduarde中分出西贝素氮氧化物(imperialine N—oxide),但与以西贝素(imPerialine)为原料经 H<sub>2</sub>O<sub>2</sub>氧化制得的合成品并不一致,且文中未见两种西贝素氮氧化物的结构。自后,日本学者从淅贝母(Fritillaria tjimbesgii)中分出淅贝乙素氮氧化物(VerticinoneN—Oxide)1和浙贝母碱氮氧化物(Verticine N-oxide)<sub>2</sub>。而1与2中N→O键的β—取向仅仅基于:
Imperialine β-N-oxide 3 isolated from the bulbs of Fritillaria siechuanica S. C. Che was identified on the basis of the chemical and spectral methods. Its all 1H and 13C-signals have been assigned unambigously based on studies of 2D NMR. In addition, assigments of the chemical shifts of some 13C-signals of 3 reported in literature 4 were revised.
出处
《有机化学》
SCIE
CAS
CSCD
北大核心
1994年第5期548-552,共5页
Chinese Journal of Organic Chemistry
基金
国家自然科学基金资助课题
关键词
西贝素
氮氧化物
核磁共振谱
Fritillaria siechuanica, imperilline β-N-oxide, 2D NMR