(3S)-3-(triisopropylsilyl)oxy-1-pyrroline N-oxide | 227954-56-5

• 分子结构分类: 有机化合物 - 有机杂环化合物 - 吡咯啉
• 英文名称: (3S)-3-(triisopropylsilyl)oxy-1-pyrroline N-oxide
• 英文别名: (3S)-3-triisopropylsilyloxy-1-pyrroline 1-oxide；[(4S)-1-oxido-3,4-dihydro-2H-pyrrol-1-ium-4-yl]oxy-tri(propan-2-yl)silane
• CAS: 227954-56-5
• 化学式: C₁₃H₂₇NO₂Si
• 分子量: 257.448
• InChiKey: BXPGKSVRHAHJJB-ZDUSSCGKSA-N

物化性质

• 沸点：
  349.9±35.0 °C(Predicted)
• 密度：
  0.92±0.1 g/cm3(Predicted)

计算性质

• 辛醇/水分配系数(LogP)：
  3.53
• 重原子数：
  17
• 可旋转键数：
  5
• 环数：
  1.0
• sp3杂化的碳原子比例：
  0.92
• 拓扑面积：
  38
• 氢给体数：
  0
• 氢受体数：
  2

反应信息

• 作为反应物：
  描述：

  (3S)-3-(triisopropylsilyl)oxy-1-pyrroline N-oxide 在 cesium fluoride 作用下， 以 乙醇 为溶剂， 反应 72.0h， 以98%的产率得到(S)-3,4-dihydro-2H-pyrrol-4-ol 1-oxide
  参考文献：
  名称：

  方便地获得（3 S）-3-（三异丙基甲硅烷基）氧基-1-吡咯啉N-氧化物，这是用于多官能化对映体纯吲哚并咪唑和吡咯并核苷合成的有用中间体

  摘要：

  通过组合使用DIBAL-H作为还原剂和三异丙基甲硅烷基作为保护基团，可以优化五步提供对映体纯的硝酮2以及从l-苹果酸中获得28％的总收率的策略。通过立构选择性的1，3-偶极环加成反应可容易地获得多羟基化的吲哚并立兹和吡咯并立兹，证明了硝酮2作为合成中间体的用途。

  DOI：

  10.1016/s0040-4039(99)00310-x
• 作为产物：
  描述：

  diethyl (2S)-triisopropylsilyloxymalate 在 盐酸羟胺 、 二异丁基氢化铝 、 三乙胺 作用下， 以 二氯甲烷 、 三乙胺 为溶剂， 反应 9.0h， 生成 (3S)-3-(triisopropylsilyl)oxy-1-pyrroline N-oxide
  参考文献：
  名称：

  方便地获得（3 S）-3-（三异丙基甲硅烷基）氧基-1-吡咯啉N-氧化物，这是用于多官能化对映体纯吲哚并咪唑和吡咯并核苷合成的有用中间体

  摘要：

  通过组合使用DIBAL-H作为还原剂和三异丙基甲硅烷基作为保护基团，可以优化五步提供对映体纯的硝酮2以及从l-苹果酸中获得28％的总收率的策略。通过立构选择性的1，3-偶极环加成反应可容易地获得多羟基化的吲哚并立兹和吡咯并立兹，证明了硝酮2作为合成中间体的用途。

  DOI：

  10.1016/s0040-4039(99)00310-x

文献信息

• Stereoselective Synthesisof Novel Ptilomycalin A Analogs via Successive 1,3-Dipolar CycloadditionReactions and their Ca²⁺-ATPase InhibitoryActivity
  作者：Kazuo Nagasawa、Angelina Georgieva、Manabu Hirai、Yuichi Hashimoto、Tadashi Nakata、Yasushi Ohizumi

  DOI：10.1055/s-2003-40195

  日期：——

  The pentacyclic guanidine compounds 4 and 5 were stereoselectively­ synthesized as novel ptilomycalin A and crambescidin analogs. The synthetic method involves successive 1,3-dipolar cycloaddition reactions which effectively access the key intermediates, trans- and cis-2,5-disubstituted pyrrolidine 8 having hydroxyl groups at the β-positions on their side chains. Among the analogs synthesized, 4b and 5b exhibited significant inhibitory activity against Ca2+-ATPase.

  五环胍类化合物4和5被立体选择性合成为新型ptilomycalin A和crambescidin类似物。合成方法涉及连续的1,3-偶极环加成反应，有效获取了关键中间体trans-和cis-2,5-二取代吡咯烷8，它们的侧链在β位具有羟基。在合成的类似物中，4b和5b表现出了显著的Ca2+-ATP酶抑制活性。
• Total Synthesis of (+)-Batzelladine A and (−)-Batzelladine D, and Identification of Their Target Protein
  作者：Jun Shimokawa、Takanori Ishiwata、Koji Shirai、Hiroyuki Koshino、Aya Tanatani、Tadashi Nakata、Yuichi Hashimoto、Kazuo Nagasawa

  DOI：10.1002/chem.200500852

  日期：2005.11.18

  Asymmetric total synthesis of batzelladine A (1) and batzelladine D (2) has been achieved. Our synthesis of batzelladines features 1) stereoselective construction of the cyclic guanidine system by means of successive 1,3-dipolar cycloaddition reaction and subsequent cyclization, 2) direct esterification of the bicyclic carboxylic acid 35 with the guanidine alcohol 8 or 59 to construct the whole carbon

  batzelladine A（1）和batzelladine D（2）的不对称全合成已实现。我们合成的batzelladines具有以下特征：1）通过连续的1,3-偶极环加成反应和随后的环化反应，立体选择性地构建环胍体系； 2）将双环羧酸35与胍醇8或59直接酯化，以构建整体巴茨拉定的碳骨架，以及3）由伯醇47与四正丙基过钌酸铵（TPAP）一步形成α，β-不饱和醛53，为巴茨拉定的左手双环胍醇提供了一条有效途径A（1）。手中拿着合成化合物1和2，使用固定的CD4和gp120亲和力凝胶检查了它们的靶蛋白。
• Indium-Mediated Reduction of Hydroxylamines to Amines
  作者：Stefano Cicchi、Marco Bonanni、Francesca Cardona、Julia Revuelta、Andrea Goti

  DOI：10.1021/ol034434l

  日期：2003.5.1

  [GRAPHICS]A novel and simple procedure for reduction of hyproxylamines to the corresponding amines by means of indium powder in aqueous media is reported. Applicability to one-pot reactions and isoxazolidine N-O bond reduction is also demonstrated. A catalytic version of the process using 2-5% In in the presence of other metals (Zn, Al) has been successfully developed.
• A comparative study of the stereoselective addition of trimethylsilyl cyanide and diethylaluminum cyanide to chiral cyclic nitrones
  作者：Pedro Merino、Tomas Tejero、Julia Revuelta、Pilar Romero、Stefano Cicchi、Vanni Mannucci、Alberto Brandi、Andrea Goti

  DOI：10.1016/s0957-4166(02)00832-7

  日期：2003.2

  The mild cyanating agent trimethylsilyl cyanide adds with total stereo selectivity to alpha-alkoxy cyclic nitrones to afford the corresponding trans-hydroxyaminonitriles. The addition of Lewis acids to precomplexing the nitrones does not affect the stereoselectivity of these additions significantly. In all of the cases examined, excellent yields of diastereomerically homogeneous products were obtained. On the other hand, the use of diethylaluminum cyanide as cyanating agent leads to low diastereoselectivities. Both NMR studies and theoretical calculations show that whereas the addition of trimethylsilyl cyanide takes place through a concerted mechanism, in the addition of diethylaluminum cyanide, a complex is formed prior to the intramolecular delivery of the cyanide ion. (C) 2003 Elsevier Science Ltd. All rights reserved.
• Total Synthesis of (−)- and (+)-Decarbamoyloxysaxitoxin and (+)-Saxitoxin
  作者：Osamu Iwamoto、Ryoko Shinohara、Kazuo Nagasawa

  DOI：10.1002/asia.200800382

  日期：2009.2.2

  AbstractPlaying the sax: The enantioselective total syntheses of (−)‐ and (+)‐decarbamoyloxysaxitoxin (doSTX) and (+)‐saxitoxin (STX) are reported. A new methodology was developed for the synthesis of STXs, featuring discriminative reduction of the nitro group and NO bond in nitroisoxazolidine.magnified imageEnantioselective total syntheses of (−)‐ and (+)‐decarbamoyloxysaxitoxin (doSTX) and (+)‐saxitoxin (STX) were achieved. The characteristic spiro‐fused cyclic guanidine structure of STX was constructed by oxidation at the C4 position with IBX via an α‐iminium carbonyl intermediate and acid‐promoted cyclization of guanidine at the C5 position. A second‐generation methodology was developed for the synthesis of STX, featuring discriminative reduction of the nitro group and NO bond in nitroisoxazolidine. This approach provides efficient access to the key diamine intermediate for STXs.