20(R),24(S)-epoxy-3β,6α,25-trihydroxycycloartan-16-one | 86500-59-6

• 分子结构分类: 有机化合物 - 脂质和类脂质分子 - 异戊烯醇脂质
• 英文名称: 20(R),24(S)-epoxy-3β,6α,25-trihydroxycycloartan-16-one
• 英文别名: 20R,24S-epoxycycloartan-3β,6α,25-triol-16-one；16-keto-cycloastragenol；cycloasalgenin；(1S,3R,6S,8R,9S,11S,12S,15S,16R)-6,9-dihydroxy-15-[(2R,5S)-5-(2-hydroxypropan-2-yl)-2-methyloxolan-2-yl]-7,7,12,16-tetramethylpentacyclo[9.7.0.01,3.03,8.012,16]octadecan-14-one
• CAS: 86500-59-6
• 化学式: C₃₀H₄₈O₅
• 分子量: 488.708
• InChiKey: GCJBMFXMOKDMRI-AFPSCHQLSA-N

计算性质

• 辛醇/水分配系数(LogP)：
  4.1
• 重原子数：
  35
• 可旋转键数：
  2
• 环数：
  6.0
• sp3杂化的碳原子比例：
  0.97
• 拓扑面积：
  87
• 氢给体数：
  3
• 氢受体数：
  5

反应信息

• 作为产物：
  描述：

  环黄芪醇 在 吡啶 、 Dowex 50w*8(H⁺) 、 sodium methylate 、 pyridinium chlorochromate 作用下， 以 甲醇 、 二氯甲烷 为溶剂， 反应 25.0h， 生成 20(R),24(S)-epoxy-3β,6α,25-trihydroxycycloartan-16-one
  参考文献：
  名称：

  Saponin and sapogenol. XXXIV. Chemical constituents of astragali radix, the root of Astragalus membranaceus Bunge. (1). Cycloastragenol, the 9,19-cyclolanostane-type aglycone of astragalosides, and the artifact aglycone astragenol.

  摘要：

  分离出黄芪（韩国黄芪（豆科）的根）的三萜低聚糖苷成分。通过酶促和化学降解，得到 9, 19-环羊毛甾烷型三萜，命名为环黄芪醇 (1)，它是 11 种黄芪甲苷中 10 种中常见的真正苷元，以及 lanost-9 (II)-烯型对应物，命名为黄芪醇分离出(5)，其是由1二次形成的人工糖苷配基。根据化学和物理化学证据，环黄芪醇和黄芪醇的结构被阐明为(20R, 24S)-3β, 6α, 16β, 25-四羟基-20, 24-环氧-9, 19-环羊毛甾烷 (1) 和 ( 20R, 24S)-3β, 6α, 16β,分别为25-四羟基-20、24-环氧-羊毛脂-9(11​​)-烯(5)。

  DOI：

  10.1248/cpb.31.689

文献信息

• Saponin and sapogenol. XXXV. Chemical constituents of astragali radix, the root of Astragalus membranaceus Bunge. (2). Astragalosides I,II and IV, acetylastragaloside I and isoastragalosides I and II.
  作者：ISAO KITAGAWA、HUIKANG WANG、MASAYUKI SAITO、AKIRA TAKAGI、MASAYUKI YOSHIKAWA

  DOI：10.1248/cpb.31.698

  日期：——

  Twelve triterpene-oligoglycosides were isolated from the glycosidic constituents of Astragali Radix, the root of Korean Astragalus membranaceus BUNGE. (Leguminosae). They were acetylastragaloside I (3), isoastragalosides I (5) and II (7), astragalosides I (4, major), II (6), III, IV (8), V, VI and VII, which contain a 9, 19-cyclolanostane cycloastragenol (1) as the aglycone, and astragaloside VIII and soyasaponin I (9), which possess an oleanene-type aglycone, soyasapogenol B. By means of chemical degradations, which included a selective cleavage method for the glucuronide linkage, and 13C-NMR examinations, the structure of astragaloside IV was elucidated as 3-O-β-D-xylopyranosyl-6-O-β-D-glucopyranosylcycloastragenol (8). In addition, the structures of five acetyl derivatives of 8 : acetylastragaloside I, astragaloside I, isoastragaloside I, astragaloside II and isoastragaloside II, were elucidated as 3-O-β-(2', 3', 4'-tri-O-acetyl)-D-xylopyranosyl- (3), 3-O-β-(2', 3'-di-O-acetyl)-D-xylopyranosyl- (4), 3-O-β-(2', 4'-di-O-acetyl)-D-xylopyranosyl- (5), 3-O-β-(2'-O-acetyl)-D-xylopyranosyl- (6) and 3-O-β-(3'-O-acetyl)-D-xylopyranosyl-6-O-β-D-glucopyranosylcycloastragenol (7), respectively.

  从朝鲜黄芪（Astragali Radix）（豆科植物朝鲜黄芪的根）的苷元成分中分离出 12 种三萜类寡糖苷。豆科它们是乙酰黄芪苷 I (3)，异黄芪苷 I (5) 和 II (7)，黄芪苷 I (4，主要)，II (6)，III，IV (8)，V，VI 和 VII，其中含有 9，19-环羊毛甾烷环黄芪烯醇 (1) 作为苷元，以及黄芪苷 VIII 和大豆皂苷 I (9)，其中含有齐墩果烯型苷元--大豆皂苷 B。通过化学降解（包括葡萄糖醛酸连接的选择性裂解方法）和 13C-NMR 检测，阐明了黄芪皂苷 IV 的结构为 3-O-β-D-xylopyranosyl-6-O-β-D-glucopyranosylcycloastragenol (8)。此外，8 的五个乙酰基衍生物的结构 ：乙酰基黄芪皂甙 I、黄芪皂甙 I、异黄芪皂甙 I、黄芪皂甙 II 和异黄芪皂甙 II 的结构分别为 3-O-β-（2'，3'，4'-三-O-乙酰基）-D-xylopyranosyl- (3)、3-O-β-（2'，3'-二-O-乙酰基）-D-xylopyranosyl- (4)、3-O-β-(2', 4'-di-O-acetyl)-D-xylopyranosyl- (5)、3-O-β-(2'-O-乙酰基)-D-xylopyranosyl- (6)和 3-O-β-(3'-O-乙酰基)-D-xylopyranosyl-6-O-β-D-glucopyranosylcycloastragenol (7)。
• Saponin and sapogenol. XXXVI. Chemical constituents of astragali radix, the root of Astragalus membranaceus Bunge. (3). Astragalosides III,V, and VI.
  作者：ISAO KITAGAWA、HUIKANG WANG、MASAYUKI SAITO、MASAYUKI YOSHIKAWA

  DOI：10.1248/cpb.31.709

  日期：——

  Based on chemical and physicochemical investigations including carbon-13 nuclear magnetic resonance (13C-NMR) examinations and methylation analyses, the structures of three astragalosides, which were isolated from Astragali Radix, the root of Korean Astragalus membranaceus BUNGE (Leguminosae), were elucidated : astragaloside III is 3-O-[β-D-glucopyranosyl (1→2)-β-D-xylopyranosyl] cycloastragenol (3), astragaloside V is 3-O-[β-D-glucopyranosyl (1→2)-β-D-xylopyranosyl]-25-O-β-D-glucopyranosyl-cycloastragenol (5) and astragaloside VI is 3-O-[β-D-glucopyranosyl (1→2)-β-D-xylopyranosyl]-6-O-β-D-glucopyranosyl-cycloastragenol (6).

  根据碳-13 核磁共振（13C-NMR）检测和甲基化分析等化学和理化研究，阐明了从朝鲜黄芪（豆科植物黄芪的根）中分离出的三种黄芪皂苷的结构：黄芪皂苷Ⅲ是 3-O-[β-D-吡喃葡萄糖基（1→2）-β-D-吡喃木糖基] 环黄芪醇（3）、黄芪皂甙 V 是 3-O-[β-D-吡喃葡萄糖基（1→2）-β-D-吡喃木糖基]-25-O-β-D-吡喃葡萄糖基-环黄芪皂甙醇（5），黄芪皂甙 VI 是 3-O-[β-D-吡喃葡萄糖基（1→2）-β-D-吡喃木糖基]-6-O-β-D-吡喃葡萄糖基-环黄芪皂甙醇（6）。
• Triterpene glycosides from Astragalus and their genins. LXXXVII. Chemical transformation of cycloartanes. IX. Partial synthesis of cycloasalgenin
  作者：I. M. Isaev、D. A. Iskenderov、M. I. Isaev

  DOI：10.1007/s10600-010-9629-y

  日期：2010.7

  The natural cycloartane triterpenoid cycloasalgenin, which is 20R,24S-epoxycycloartan-3β,6α,25-triol16-one, was partially synthesized in three steps starting from cyclosiversigenin. In addition to the desired product, its 17-epimer was synthesized. The analogous 17-epimer was also prepared from cycloadsurgenin.

  从环藜芦素开始，通过三个步骤部分合成了天然环木菠萝烷三萜类化合物环藜芦素，即 20R,24S-环氧环木菠萝烷-3β,6α,25-三醇 16-酮。除所需产物外，还合成了其 17-表亚胺。类似的 17-epimer 也是由环泽兰素制备的。
• Saponin and sapogenol. XXXIV. Chemical constituents of astragali radix, the root of Astragalus membranaceus Bunge. (1). Cycloastragenol, the 9,19-cyclolanostane-type aglycone of astragalosides, and the artifact aglycone astragenol.
  作者：ISAO KITAGAWA、HUIKANG WANG、AKIRA TAKAGI、MASAKO FUCHIDA、IWAO MIURA、MASAYUKI YOSHIKAWA

  DOI：10.1248/cpb.31.689

  日期：——

  Triterpene-oligoglycoside constituents of Astragali Radix, the root of Korean Astragalus membranaceus BUNGE (Leguminosae), were isolated. By means of enzymatic and chemical degradations, the 9, 19-cyclolanostane-type triterpene named cycloastragenol (1), which was the common genuine aglycone of ten of eleven astragalosides, and the lanost-9 (II)-ene-type counterpart named astragenol (5), which was an artifact aglycone secondarily formed from 1, were isolated. On the basis of chemical and physicochemical evidence, the structures of cycloastragenol and astragenol were elucidated as (20R, 24S)-3β, 6α, 16β, 25-tetrahydroxy-20, 24-epoxy-9, 19-cyclolanostane (1) and (20R, 24S)-3β, 6α, 16β, 25-tetrahydroxy-20, 24-epoxy-lanost-9 (11)-ene (5), respectively.

  分离出黄芪（韩国黄芪（豆科）的根）的三萜低聚糖苷成分。通过酶促和化学降解，得到 9, 19-环羊毛甾烷型三萜，命名为环黄芪醇 (1)，它是 11 种黄芪甲苷中 10 种中常见的真正苷元，以及 lanost-9 (II)-烯型对应物，命名为黄芪醇分离出(5)，其是由1二次形成的人工糖苷配基。根据化学和物理化学证据，环黄芪醇和黄芪醇的结构被阐明为(20R, 24S)-3β, 6α, 16β, 25-四羟基-20, 24-环氧-9, 19-环羊毛甾烷 (1) 和 ( 20R, 24S)-3β, 6α, 16β,分别为25-四羟基-20、24-环氧-羊毛脂-9(11​​)-烯(5)。