目的 研究卷丹 (LiliumlancifoliumThunb .)鳞叶的化学成分。方法 用各种色谱技术进行分离和纯化 ,用MALDI TOF MS ,HR SI MS ,IR ,1 HNMR ,1 3CNMR ,DEPT ,1 H 1 HCOSY ,HMQC和HMBC等光谱和波谱技术鉴定其结构。结果 从卷丹鳞叶中分...目的 研究卷丹 (LiliumlancifoliumThunb .)鳞叶的化学成分。方法 用各种色谱技术进行分离和纯化 ,用MALDI TOF MS ,HR SI MS ,IR ,1 HNMR ,1 3CNMR ,DEPT ,1 H 1 HCOSY ,HMQC和HMBC等光谱和波谱技术鉴定其结构。结果 从卷丹鳞叶中分得 2个甾体皂苷 ,鉴定化合物 1为薯蓣皂苷元 3 O {O α L 鼠李糖基 (1→ 2 ) O [β D 木糖基(1→ 3) ] β D 葡萄糖苷 ,化合物 2为薯蓣皂苷元 3 O {O α L 鼠李糖基 (1→ 2 ) O [α L 阿拉伯糖基 (1→ 3) ] β D 葡萄糖苷。结论 化合物 2为新化合物 ,命名为卷丹皂苷A。展开更多
Self-assembly of a functional cryptand core（1） having six dithiocarbamate groups and \{（dppm）Au2Cl\}2 in methanol followed by the addition of excess NH4PF6 affords a novel metallodendritic supramolecule（2）. This...Self-assembly of a functional cryptand core（1） having six dithiocarbamate groups and \{（dppm）Au2Cl\}2 in methanol followed by the addition of excess NH4PF6 affords a novel metallodendritic supramolecule（2）. This dendritic supramolecule was characterized by NMR, MS, XPS, IR, UV-Vis, luminescence spectra and elemental analyses. The results show the concentration-dependent absorption and luminescent properties in acetonitrile solution for the title compound, which may be closely related to the intramolecular and intermolecular aggregation of digold（Ⅰ） branches through Au（Ⅰ）…Au（Ⅰ） interactions.展开更多
A new saikosaponin was isolated from Bupleurum chinense DC., and its structure was identified as 3β,16α,23,28,30_pentahydroxy_olean_11,13(18)_dien_3_O_β_D_glucopyranosyl(1→6)_[α_L_rhamnopyranosyl (1→4)]_β_D...A new saikosaponin was isolated from Bupleurum chinense DC., and its structure was identified as 3β,16α,23,28,30_pentahydroxy_olean_11,13(18)_dien_3_O_β_D_glucopyranosyl(1→6)_[α_L_rhamnopyranosyl (1→4)]_β_D_glucopyranoside on the basis of chemical and spectral evidence, named as saikosaponin q_1. In addition, two known saikosaponins, 3″_O_acetyl_saikosaponin d and 3″_O_acetyl_saikosaponin b 2, were also isolated and identified from this plant for the first time.展开更多
文摘目的 研究卷丹 (LiliumlancifoliumThunb .)鳞叶的化学成分。方法 用各种色谱技术进行分离和纯化 ,用MALDI TOF MS ,HR SI MS ,IR ,1 HNMR ,1 3CNMR ,DEPT ,1 H 1 HCOSY ,HMQC和HMBC等光谱和波谱技术鉴定其结构。结果 从卷丹鳞叶中分得 2个甾体皂苷 ,鉴定化合物 1为薯蓣皂苷元 3 O {O α L 鼠李糖基 (1→ 2 ) O [β D 木糖基(1→ 3) ] β D 葡萄糖苷 ,化合物 2为薯蓣皂苷元 3 O {O α L 鼠李糖基 (1→ 2 ) O [α L 阿拉伯糖基 (1→ 3) ] β D 葡萄糖苷。结论 化合物 2为新化合物 ,命名为卷丹皂苷A。
文摘Self-assembly of a functional cryptand core（1） having six dithiocarbamate groups and \{（dppm）Au2Cl\}2 in methanol followed by the addition of excess NH4PF6 affords a novel metallodendritic supramolecule（2）. This dendritic supramolecule was characterized by NMR, MS, XPS, IR, UV-Vis, luminescence spectra and elemental analyses. The results show the concentration-dependent absorption and luminescent properties in acetonitrile solution for the title compound, which may be closely related to the intramolecular and intermolecular aggregation of digold（Ⅰ） branches through Au（Ⅰ）…Au（Ⅰ） interactions.
文摘A new saikosaponin was isolated from Bupleurum chinense DC., and its structure was identified as 3β,16α,23,28,30_pentahydroxy_olean_11,13(18)_dien_3_O_β_D_glucopyranosyl(1→6)_[α_L_rhamnopyranosyl (1→4)]_β_D_glucopyranoside on the basis of chemical and spectral evidence, named as saikosaponin q_1. In addition, two known saikosaponins, 3″_O_acetyl_saikosaponin d and 3″_O_acetyl_saikosaponin b 2, were also isolated and identified from this plant for the first time.
