Five New Nortropane Alkaloids and Six New Amino Acids from the Fruit of Morus alba LINNE Growing in Turkey.
作者:Genjirou Kusano、Shiho Orihara、Daisuke Tsukamoto、Makio Shibano、Maksut Coskun、Aysegul Guvenc、Ceyda Sibel Erdurak
DOI:10.1248/cpb.50.185
日期:——
Investigation of the constituents of the fruits of Morus alba LINNE (Moraceae) afforded five new nortropane alkaloids (1—5) along with nor-ψ-tropine (6) and six new amino acids, morusimic acids A—F (7—12). The structures of the new compounds were determined to be 2α,3β-dihydroxynortropane (1), 2β,3β-dihydroxynortropane (2), 2α,3β,6exo-trihydroxynortropane (3), 2α,3β,4α-trihydroxynortropane (4), 3β,6exo-dihydroxynortropane (5), (3R)-3-hydroxy-12-(1S,4S)-4-[(1S)-1-hydroxyethyl]-pyrrolidin-1-yl}-dodecanoic acid-3-O-β-D-glucopyranoside (7), (3R)-3-hydroxy-12-(1S,4S)-4-[(1S)-1-hydroxyethyl]-pyrrolidin-1-yl}-dodecanoic acid (8), (3R)-3-hydroxy-12-[(1R,4R,5S)-4-hydroxy-5-methyl-piperidin-1-yl]-dodecanoic acid-3-O-β-D-glucopyranoside (9), (3R)-3-hydroxy-12-[(1R,4R,5S)-4-hydroxy-5-methyl-piperidin-1-yl]-dodecanoic acid (10), (3R)-3-hydroxy-12-[(1R,4R,5S)-4-hydroxy-5-hydroxymethyl-piperidin-1-yl]-dodecanoic acid-3-O-β-D-glucopyranoside (11), and (3R)-3-hydroxy-12-[(1R,4S,5S)-4-hydroxy-5-methyl-piperidin-1-yl]-dodecanoic acid (12) on the basis of spectral and chemical data.
对白桑(Morus alba LINNE,桑科植物)果实成分的研究发现了五种新的去甲托烷生物碱(1-5)以及去甲托品碱(6)和六种新的氨基酸,即桑树酸 A-F(7-12)。新化合物的结构被确定为 2α,3β-二羟基去甲托烷(1)、2β,3β-二羟基去甲托烷(2)、2α,3β,6exo-三羟基去甲托烷(3)、2α,3β,4α-三羟基去甲托烷(4)、3β,6exo-二羟基去甲托烷(5)、(3R)-3-羟基-12-(1S,4S)-4-[(1S)-1-羟乙基]-吡咯烷-1-基}-十二酸-3-O-β-<小>D小>-吡喃葡萄糖苷 (7)、(3R)-3-hydroxy-12-(1S,4S)-4-[(1S)-1-hydroxyethyl]-pyrrolidin-1-yl}-dodecanoic acid (8), (3R)-3-hydroxy-12-[(1R,4R,5S)-4-羟基-5-甲基-哌啶-1-基]-十二烷酸-3-O-β-D-吡喃葡萄糖苷 (9),(3R)-3-羟基-12-[(1R,4R,5S)-4-羟基-5-甲基-哌啶-1-基]-十二烷酸 (10),(3R)-3-羟基-12-[(1R,4R、5S)-4-hydroxy-5-hydroxymethyl-piperidin-1-yl]-dodecanoic acid-3-O-β-D-glucopyranoside (11),以及 (3R)-3-hydroxy-12-[(1R,4S,5S)-4-hydroxy-5-methyl-piperidin-1-yl]-dodecanoic acid (12)。