Chen, JJ (reprint author), Chinese Acad Sci, Kunming Inst Bot, State Key Lab Phytochem & Plant Resources West Ch, Kunming 650201, Peoples R China.
Two new sesquiterpenoid glycosides, nicotabalactonecoside (1) and nicotabadiolcoside (2), along with four known terpenoids (3-6) were isolated from the leaves of Nicotiana tabacum. The structures of compounds 1 and 2 were determined as dihydrodeacetylphytuberin-2-one 11-O--d-glucopyranoside and 1,2-dehydro-4-epieremophil-9-ene-11,12-diol 12-O--d-glucopyranoside by extensive spectroscopic analyses (HR-ESI-MS, UV, IR, 1D, and 2D NMR) and chemical method. Compound 1 is an unusual phytuberin-type sesquiterpenoid with a 6/5/5 tricyclic system.
1.Yunnan Univ, Sch Life Sci, Kunming 650091, Peoples R China 2.Chinese Acad Sci, Kunming Inst Bot, State Key Lab Phytochem & Plant Resources West Ch, Kunming 650201, Peoples R China
Yang,Cai-Yan;Geng,Chang-An;Ma,Yun-Bao;Huang,Xiao-Yan;Zhang,Xue-Mei;Zhou,Jun;Chen,Ji-Jun.Two new sesquiterpenoid glycosides from Nicotiana tabacum,JOURNAL OF ASIAN NATURAL PRODUCTS RESEARCH,2014,16(6):611-616