Studies on the Constituents of Broussonetia Species. IV. Two New Pyrrolidinyl Piperidine Alkaloids, Broussonetines I and J, from Broussonetia kazinoki SIEB.
作者:Makio SHIBANO、Satoko NAKAMURA、Masami KUBORI、Katsuhiko MINOURA、Genjiro KUSANO
DOI:10.1248/cpb.46.1416
日期:——
Two new pyrrolidinyl piperidine alkaloids called broussonetines I and J were isolated from the branches of Broussonetia kazinoki SIEB. (Moraceae). Broussonetines I and J were formulated as (2R)-2-(1S, 2S)-1, 2-dihydroxy-8-[(2R, 3R, 4R, 5R)-5-(2-hydroxymethyl-3, 4-dihydroxypyrrolidinyl)octyl}-1-acetylpiperidine (1) and (2R)-2-(1S, 2S)-1, 2-dihydroxy-8-[(2R, 3R, 4R, 5R)-5-(2-hydroxymethyl-3, 4-dihydroxy-1-acetylpyrrolidinyl)]octyl}-1-acetyl-piperidine (2), respectively, by spectroscopic and chemical methods.
从木棉(Broussonetia kazinoki SIEB.)的树枝中分离出两种新的吡咯烷基哌啶生物碱,分别命名为Broussonetines I和J。通过光谱和化学方法,Broussonetines I和J分别被确定为(2R)-2-((1S,2S)-1,2-二羟基-8-((2R,3R,4R,5R)-5-(2-羟甲基-3,4-二羟基吡咯烷基)辛基)-1-乙酰基哌啶(1)和(2R)-2-((1S,2S)-1,2-二羟基-8-((2R,3R,4R,5R)-5-(2-羟甲基-3,4-二羟基-1-乙酰基吡咯烷基)辛基)-1-乙酰基哌啶(2)。