(5R,8aR)-5-propylindolizidine hydrochloride | 130884-95-6

• 分子结构分类: 有机化合物 - 有机杂环化合物 - 吲哚里西啶
• 英文名称: (5R,8aR)-5-propylindolizidine hydrochloride
• 英文别名: (5R,8aR)-indolizidine 167B hydrochloride；gephyrotoxin 167B hydrochloride；indolizidine 167B hydrochloride；(+/-)-indolizidine 167B hydrochloride；(±)-indolizidine 167B hydrochloric Salt；(+/-)-5-propyloctahydroindolizine hydrochloride
• CAS: 130884-95-6
• 化学式: C₁₁H₂₁N*ClH
• 分子量: 203.755
• InChiKey: XFHCEEQDUGTKFL-NDXYWBNTSA-N

计算性质

• 辛醇/水分配系数(LogP)：
  3.23
• 重原子数：
  13.0
• 可旋转键数：
  2.0
• 环数：
  2.0
• sp3杂化的碳原子比例：
  1.0
• 拓扑面积：
  3.24
• 氢给体数：
  0.0
• 氢受体数：
  1.0

反应信息

• 作为产物：
  描述：

  Oct-7-en-4-one N,N-Dimethylhydrazone 在 吡啶 、 盐酸 、 氢氧化钾 、 jones reagent 、 草酰氯 、 盐酸羟胺 、 三正丁基氢锡 、 sodium cyanoborohydride 、 溶剂黄146 、 甲基磺酰氯 、 锌 作用下， 以 四氢呋喃 、 甲醇 、 乙醇 、 二氯甲烷 、 丙酮 、 苯 为溶剂， 反应 50.34h， 生成 (5R,8aR)-5-propylindolizidine hydrochloride
  参考文献：
  名称：

  Stereoselective synthesis of (.+-.)-indolizidines 167B, 205A, and 207A. Enantioselective synthesis of (-)-indolizidine 209B

  摘要：

  The first syntheses of the dendrobatid indolizidine alkaloids 167B (3), 205A (4), and 207A (5) are described using as a key step the highly stereoselective intramolecular nitrone cycloaddition of the (Z)-N-alkenylnitrone 10 to prepare the isoxazolidine 11. Mesylate-promoted cyclization of the alcohol 12, followed by reductive cleavage of the resulting mesylate salt, afforded the key axial hydroxymethyl compound 13, which was epimerized via the aldehyde to the equatorial alcohol, and was subsequently reduced to the required 8-methyl-substituted indolizidine. The feasibility of extending this strategy to the enantioselective synthesis of such alkaloids was demonstrated in the first synthesis of (-)-indolizidine 209B (6), whose nitrone precursor 10d was obtained from the (S)-glutamate-derived amine 40.

  DOI：

  10.1021/jo00004a012

文献信息

• Reductive Alkylation of Tertiary Lactams via Addition of Organocopper (RCu) Reagents to Thioiminium Ions
  作者：Pierre Mateo、Joséphine E. Cinqualbre、Melinda Meyer Mojzes、Kurt Schenk、Philippe Renaud

  DOI：10.1021/acs.joc.7b02150

  日期：2017.12.1

  A simple procedure for the conversion of tertiary lactams to 2-monoalkylated cyclic amines is described. The reaction sequence involves conversion of a lactam to a thioiminium ion followed by reaction with an organocopper (RCu) reagent and final reduction with triacetoxyborohydride. The reaction is high yielding and shows an excellent functional group tolerance. Its utility is demonstrated by a rapid

  描述了将叔内酰胺转化为2-单烷基化的环胺的简单程序。反应顺序包括将内酰胺转化为硫亚胺离子，然后与有机铜（RCu）试剂反应，最后用三乙酰氧基硼氢化物还原。该反应产率高并且显示出优异的官能团耐受性。吲哚并立定167B的快速合成证明了其实用性。仅形成单烷基化产物的该方法的优异化学选择性通过涉及形成瞬时烯胺的机理来合理化。
• Intramolecular Redox-Triggered CH Functionalization
  作者：Igor D. Jurberg、Bo Peng、Eckhard Wöstefeld、Maximilian Wasserloos、Nuno Maulide

  DOI：10.1002/anie.201108639

  日期：2012.2.20

  Sacrifice for the team: A one‐pot method achieves remote functionalization at the α‐position of an amine moiety through the sacrificial reduction of a neighboring group. The process takes advantage of an intramolecular redox reaction, thereby avoiding the need for any external oxidants. This method was applied to a concise five‐step total synthesis of indolizidine 167B.

  对团队的牺牲：单锅法通过牺牲性还原相邻基团，在胺部分的α位实现远程官能化。该方法利用了分子内的氧化还原反应，从而避免了任何外部氧化剂的需要。该方法用于简明的吲哚并啶167B的五步全合成。
• Enantioselective Rhodium-Catalyzed Allylation of Aliphatic Imines: Synthesis of Chiral C-Aliphatic Homoallylic Amines
  作者：Wei-Sian Li、Ting-Shen Kuo、Meng-Chi Hsieh、Ming-Kang Tsai、Ping-Yu Wu、Hsyueh-Liang Wu

  DOI：10.1021/acs.orglett.0c02069

  日期：2020.7.17

  method for the efficient syntheses of optically active 1-alkyl homoallylic amines in yields up to 95%, 13.5:1 dr, and 98% ee under mild, aqueous reaction conditions, via the Rh-catalyzed asymmetric allylation of aliphatic aldimines. This method provides a streamlined synthetic platform for the preparation of indolizidine and piperidine alkaloids, thus demonstrating its usefulness.

  本文报道的是一种在温和的水性反应条件下，通过Rh催化的脂肪族醛亚胺的不对称烯丙基化反应，以高达95％，13.5：1 dr和98％ee的产率高效合成光学活性的1-烷基均烯丙基胺的方法。 。该方法为制备吲哚并啶和哌啶生物碱提供了一个简化的合成平台，从而证明了其有用性。