Saponin and sapogenol. XXXI. Chemical constituents of the seeds of Vigna angularis (Willd.) Ohwi et Ohashi. (1). Triterpenoidal sapogenols and 3-furanmethanol .BETA.-D-glucopyranoside.
摘要:
从赤豆(Vigna angularis (Willd.) Ohwi et Ohashi 豆科)种子中分离得到3-呋喃甲醇β-D-吡喃葡糖苷(1)和(+)-儿茶素7-O-β-D-吡喃葡糖苷(3),并确定了它们的结构。从赤豆中还分离得到了总赤豆皂苷混合物。通过酶解、酸解和光化学降解,从总赤豆皂苷中分离出了4种真正的皂苷元,其中包括3种已知的皂苷元:染料木苷元(7)、大豆苷元B(8)、皂土酸(9)和一个新的皂苷元,命名为赤豆皂苷元(10),并阐明了其结构。作为总赤豆皂苷酸解释放的假皂苷元之一,分离得到了一个新的皂苷元,命名为无水染料木苷元(5),并阐明了其结构。
sapogenol artefact identified as 3β,22β,24-trihydroxyolean-18(19)-en and named soyasapogenol H. From a zanhic acid saponin two major artefact compounds identified as 2β,3β,16α-trihydroxyolean-13(18)-en-23,28-dioic acid and 2β,3β,16α-trihydroxyolean-28,13β-olide-23-oic acid were obtained, together with some zanhic acid. Other compounds, detected in very small amount in the reaction mixture, were also tentatively
The chemical structures of azukisaponins V (1) and VI (5), two of the six oligoglycosidic ingredients of total azukisaponin isolated from azuki beans, the seeds of Vigna angularis (WILLD.) OHWI et OHASHI (Leguminosae), were investigated. By means of photochemical degradation and chemical analyses, the structures of azukisaponins V and VI were elucidated to be 3-O-[α-L-rhamnopyranosyl (1→2)-β-D-glucopyranosyl (1→2)-β-D-glucuronopyranosyl]-soyasapogenol B (1) and 3-O-[β-D-glucopyranosyl (1→2)-β-D-glucuronopyranosyl]-29-O-[β-D-glucopyranosyl (1→6)-β-D-glucuronopyranosyl] azukisapogenol (5), respectively. Azukisaponin VI (5) is the first reported example of a 3, 29-bisdesmoside of an oleanene oligoglycoside.
研究了从红豆(Vigna angularis (WILLD.) OHWI et OHASHI)中提取的总红豆皂苷的六种寡糖苷成分中的两种:红豆皂苷V(1)和VI(5)的化学结构。通过光化学降解和化学分析,阐明了红豆皂苷V和VI的结构分别为3-O-[α-L-鼠李糖吡喃基(1→2)-β-D-葡萄糖吡喃基(1→2)-β-D-葡萄糖醛酸吡喃基]-大豆皂苷醇B(1)和3-O-[β-D-葡萄糖吡喃基(1→2)-β-D-葡萄糖醛酸吡喃基]-29-O-[β-D-葡萄糖吡喃基(1→6)-β-D-葡萄糖醛酸吡喃基]红豆皂苷醇(5)。红豆皂苷VI(5)是首次报道的三、二十九双配糖体的鞘脂寡糖苷。
Regioselective Oxidation of the Hydroxyl Group in Polyhydroxylated Triterpenes by the Indirect Anodic Oxidation Method.
Indirect anodic oxidation of soyasapogenol B (3β, 22β, 24-trihydroxyolean-12-ene) was carried out using KI as a mediator in t-BuOH-H2O solution, so that the 3-ketone derivative was obtained as the only oxidation product in a favorable yield. As a result of application to various polyhydroxylated triterpenes, selective electrochemical oxidation was shown to occur in the C-3 hydroxyl group of the polyhydroxyl triterpenes with the C-24 hydroxyl group. The reaction pathway is discussed.
Soyasapogenol A, B, and C are shown to be 3β:21:22:24-tetrahydroxyolean-12-ene, 3β:21α:24-trihydroxyolean-12-ene (XVIII) and 3β:24-dihydroxyoleana-12:21-diene (IX, R = H), respectively. Of the two possible configurations, α and β, for the cis-glycol group in soyasapogenol A the former is preferred, and soyasapogenol A tetra-acetate is represented by (X, R = Ac). The stereoisomeric soyasapogenol A tetra-acetate
Polynucleotide binding complexes comprising sterols and saponin
申请人:Nordic Vaccine Technology A/S
公开号:EP2011517A1
公开(公告)日:2009-01-07
The present invention pertains to complexes comprising sterols and saponins. The complexes are capable of binding a genetic determinant including a polynucleotide. The complexes may further comprise a lipophilic moiety, optionally a lipophilic moiety comprising a contacting group and/or a targeting ligand, and/or a saccharide moiety. The complexes may further comprise an immunogenic determinant and/or an antigenic determinant and/or a medicament and/or a diagnostic compound. The complexes may in even further embodiments be encapsulated by an encapsulation agent including a biodegradable microsphere. The present invention also pertains to pharmaceutical compositions and methods of treatment of an individual by therapy and/or surgery, methods of cosmetic treatment, and diagnostic methods practised on the human or animal body.