[(4'aS,5'S,13'bR)-11',12'-dimethoxy-6'-oxospiro[1,3-dioxolane-2,3'-2,4,4a,5,8,9-hexahydro-1H-indolo[7a,1-a]isoquinoline]-5'-yl] methanesulfonate

• 分子结构分类: 有机化合物 - 生物碱及其衍生物 - 刺桐生物碱
• 英文名称: [(4'aS,5'S,13'bR)-11',12'-dimethoxy-6'-oxospiro[1,3-dioxolane-2,3'-2,4,4a,5,8,9-hexahydro-1H-indolo[7a,1-a]isoquinoline]-5'-yl] methanesulfonate
• 化学式: C₂₁H₂₇NO₈S
• 分子量: 453.513
• InChiKey: MLHDBRJDPLOKFV-YWMUFLPLSA-N

计算性质

• 辛醇/水分配系数(LogP)：
  0.9
• 重原子数：
  31
• 可旋转键数：
  4
• 环数：
  5.0
• sp3杂化的碳原子比例：
  0.67
• 拓扑面积：
  109
• 氢给体数：
  0
• 氢受体数：
  8

反应信息

• 作为反应物：
  描述：

  [(4'aS,5'S,13'bR)-11',12'-dimethoxy-6'-oxospiro[1,3-dioxolane-2,3'-2,4,4a,5,8,9-hexahydro-1H-indolo[7a,1-a]isoquinoline]-5'-yl] methanesulfonate 在 盐酸 、 1,8-二氮杂双环[5.4.0]十一碳-7-烯 作用下， 生成 (5S)-15,16-dimethoxy-Δ¹⁽⁶⁾-erythrinan-2,8-dione
  参考文献：
  名称：

  Synthesis of Erythrina and Related Alkaloids. Part XXXVII. Chiral synthesis of enantio-type erythrinan alkaloids utilizing asymmetric acylation and kinetic resolution of diastereomers.

  摘要：

  从 L-多巴衍生物 (1) 开始，通过不对称酰化和动力学解析，实现了一种赤藓楠生物碱--(-)-3-去甲氧基赤藓桔梗酮 (11) 和一种多功能中间体--1, 7-环赤藓楠衍生物 (14) 的手性合成（两者都是对映体类型）。

  DOI：

  10.1248/cpb.40.3115
• 作为产物：
  描述：

  diethyl (4aR,5R,8S,13bS)-5-hydroxy-11,12-dimethoxy-6-oxospiro[1,2,4,5,8,9-hexahydroindolo[7a,1-a]isoquinoline-3,2'-1,3-dioxolane]-4a,8-dicarboxylate 在 吡啶 、 六甲基磷酰三胺 、 sodium hydroxide 、 sodium tetrahydroborate 、 N,N-二甲基-1,3-二氨基丙烷 、 magnesium chloride 作用下， 以 乙醇 、 二甲基亚砜 为溶剂， 生成 [(4'aS,5'S,13'bR)-11',12'-dimethoxy-6'-oxospiro[1,3-dioxolane-2,3'-2,4,4a,5,8,9-hexahydro-1H-indolo[7a,1-a]isoquinoline]-5'-yl] methanesulfonate
  参考文献：
  名称：

  Synthesis of Erythrina and Related Alkaloids. Part XXXVII. Chiral synthesis of enantio-type erythrinan alkaloids utilizing asymmetric acylation and kinetic resolution of diastereomers.

  摘要：

  从 L-多巴衍生物 (1) 开始，通过不对称酰化和动力学解析，实现了一种赤藓楠生物碱--(-)-3-去甲氧基赤藓桔梗酮 (11) 和一种多功能中间体--1, 7-环赤藓楠衍生物 (14) 的手性合成（两者都是对映体类型）。

  DOI：

  10.1248/cpb.40.3115

文献信息

• Synthesis of erythrina and related alkaloids. XXII. Intramolecular cyclization approach. 1): New synthetic route to erythrinan and related heterocycles and synthesis of (.+-.)-3-demethoxy-erythratidinone.
  作者：Yoshisuke TSUDA、Yuki SAKAI、Akira NAKAI、Mari KANEKO、Yukie ISHIGURO、Kimiaki ISOBE、Jun-ichi TAGA、Takehiro SANO

  DOI：10.1248/cpb.38.1462

  日期：——

  Heating of cycloalkanone-2-carboxylate with β-arylethylamine, and oxalylation of the resulting enamino-ester followed by Lewis acid-catalyzed intramolecular cyclization afforded various erythrinan-type heterocycles in excellent yields. This method is widely applicable not only to the synthesis of erythrinans but also to that of A-nor and A-homo analogs and ring-D variants of erythrinan. The alkoxycarbonyl group on the products was readily removed by a new decarbalkoxylation method (heating with magnesium chloride-dimethyl sulfoxide combination). Thus, starting from 2-ethoxycarbonyl-4, 4-ethylenedioxy-cyclohexanone, the 2, 8-dioxo-erythrinan derivative (35) was synthesized in several steps in high yield, and was readily converted to the natural Erythrina alkaloid, 3-demethoxyerythratidinone.

  将环烷酮-2-羧酸酯与β-芳基乙胺加热，并对所得到的烯胺酯进行草酰化，随后经过路易斯酸催化的分子内环化反应，可以很好地获得多种红豆杉类杂环化合物。该方法不仅广泛适用于红豆杉类化合物的合成，还可用于A-去甲基和A-同源物以及红豆杉的环-D变体的合成。产品中的烷氧羰基团可以通过一种新的去羧基化方法（与氯化镁-二甲基亚硫酰胺的组合加热）轻松去除。因此，从2-乙氧羰基-4,4-乙烯基二氧环己酮出发，经过几步反应以高产率合成了2,8-二氧红豆杉派生物（35），并可以很容易地转化为天然红豆杉生物碱3-去甲氧基红豆杉啶酮。
• Synthesis of Erythrina and Related Alkaloids. Part XXXVII. Chiral synthesis of enantio-type erythrinan alkaloids utilizing asymmetric acylation and kinetic resolution of diastereomers.
  作者：Shinzo HOSOI、Kazuya ISHIDA、Masako SANGAI、Yoshisuke TSUDA

  DOI：10.1248/cpb.40.3115

  日期：——

  Chiral synthesis of an erythrinan alkaloid, (-)-3-demethoxyerythratidinone (11), as well as a versatile intermediate, the 1, 7-cycloerythrinan derivative (14) (both are of enantio-type) was achieved using asymmetric acylation and kinetic resolution starting from the L-dopa derivative (1).

  从 L-多巴衍生物 (1) 开始，通过不对称酰化和动力学解析，实现了一种赤藓楠生物碱--(-)-3-去甲氧基赤藓桔梗酮 (11) 和一种多功能中间体--1, 7-环赤藓楠衍生物 (14) 的手性合成（两者都是对映体类型）。
• Tsuda, Yoshisuke; Nakai, Akira; Ito, Kazuo, Heterocycles, 1984, vol. 22, # 8, p. 1817 - 1820
  作者：Tsuda, Yoshisuke、Nakai, Akira、Ito, Kazuo、Suzuki, Fumio、Haruna, Mitsumasa

  DOI：——

  日期：——
• Chiral Synthesis of Erythrina Alkaloids. (2). Synthesis of enantio-Type Erythrinan Alkaloids Utilizing Asymmetric Acylation and Kinetic Resolution of Diastereomers.
  作者：Yoshisuke TSUDA、Shinzo HOSOI、Kazuya ISHIDA、Masako SANGAI

  DOI：10.1248/cpb.42.204

  日期：——

  Oxalylation of the enamino-ester 13 derived from the L-dopa derivative 12 gave the dioxopyrroline of (6S)-configuration (15A) diastereoselectively (50-60% diastereomer excess). This was converted to a mixture of erythrinans of (5S, 6R, 7R, 10S) and (5R, 6S, 7S, 10S) configuration by cyclization with BF3·Et2O. The de of the major diastereomer (A) was elevated to 82% by application of a kinetic resolution of diastereomers (partial hydrolysis of the ethylene acetal group), where the minor diastereomer (B) was hydrolyzed more rapidly. The acetal 17A which remained unchanged was converted, in several steps, to the enantio-type erythrinan alkaloid, (-)-3-demethoxyerythratidinone (-)-7, and also to the 1, 7-cycloerythrinan (-)-9, a key intermediate to Erythrina alkaloids. The more easily hydrolyzable diastereomer (B) was similarly converted to the enantiomer (+)-9. The mechanism of partial racemization, sometimes observed in the product, is discussed.

  由 L-多巴衍生物 12 衍生出的烯酰胺酯 13 通过草酰化反应，非对映选择性地得到了 (6S) 构型的二氧吡咯啉 (15A)（非对映异构体过量率为 50-60%）。通过与 BF3-Et2O 环化，将其转化为（5S, 6R, 7R, 10S）和（5R, 6S, 7S, 10S）构型的赤藓红混合物。通过非对映异构体的动力学解析（乙烯缩醛基团的部分水解），主要非对映异构体（A）的de 提高到 82%，而次要非对映异构体（B）的水解速度更快。保持不变的乙缩醛 17A 经过几个步骤转化为对映体型红花楠生物碱 (-)-3-demethoxyerythratidinone (-)-7，以及红花楠生物碱的关键中间体 1，7-环红花楠 (-)-9。更容易水解的非对映异构体（B）也同样转化为对映体（+）-9。本文讨论了有时在产品中观察到的部分消旋化机制。