(S)-N-Boc-phenylalanine benzylamide

• 分子结构分类: 有机化合物 - 有机酸及其衍生物 - 羧酸及其衍生物
• 英文名称: (S)-N-Boc-phenylalanine benzylamide
• 英文别名: (S)-tert-butyl (1-(benzylamino)-1-oxo-3-phenylpropan-2-yl)carbamate；N-Boc-L-phenylalanine benzylamide；N-(Boc-L-phenylalanyl)benzylamine；tert-butyl N-[(2S)-1-(benzylamino)-1-oxo-3-phenylpropan-2-yl]carbamate
• 化学式: C₂₁H₂₆N₂O₃
• 分子量: 354.449
• InChiKey: BHFUBRBEEFGRHT-SFHVURJKSA-N

计算性质

• 辛醇/水分配系数(LogP)：
  3.4
• 重原子数：
  26
• 可旋转键数：
  8
• 环数：
  2.0
• sp3杂化的碳原子比例：
  0.33
• 拓扑面积：
  67.4
• 氢给体数：
  2
• 氢受体数：
  3

反应信息

• 作为反应物：
  描述：

  (S)-N-Boc-phenylalanine benzylamide 在 三氟乙酸 作用下， 以 二氯甲烷 为溶剂， 生成 L-phenylalanine benzylamide
  参考文献：
  名称：

  Pd 催化的吡啶甲酰胺定向 C（sp2）–H 氨基磺酰化氨基酸/肽与亚磺酸钠

  摘要：

  本报告描述了 Pd 催化的吡啶甲酰胺定向位点选择性 C（sp2）-H 氨基酸和肽与亚磺酸钠的磺酰化反应，产率中等至良好。首次研究了左旋多巴和多巴胺药物分子的磺酰化以及晚期定向肽磺酰化。潜在的优势包括具有各种功能的广泛底物范围、后期药物修饰以及各种合成后实用程序，如硫属化、溴化、烯化和芳基化。

  DOI：

  10.1021/acs.joc.4c00988
• 作为产物：
  描述：

  (S)-2-[(tert-butoxycarbonyl)amino]-3-phenylpropionamide 在 5A molecular sieve 、 氯化锆(IV) 作用下， 以 二氯甲烷 、 乙腈 为溶剂， 反应 5.0h， 生成 (S)-N-Boc-phenylalanine benzylamide
  参考文献：
  名称：

  Efficient Transamidation of Primary Carboxamides by in Situ Activation with N,N-Dialkylformamide Dimethyl Acetals

  摘要：

  Two protocols for the transamidation of primary amides with primary and secondary amines, forming secondary and tertiary amides, respectively, are described. Both processes employ N,N-dialkylformamide dimethyl acetals for primary amide activation, producing N'-acyl-N,N-dialkylformamidines as intermediates, as widely documented in the literature. Although the latter intermediates react irreversibly with amines by amidinyl transfer, we show that in the presence of certain Lewis acid additives efficient acyl transfer occurs, providing new and useful methods for amide exchange. In one protocol for transamidation, the N'-acyl- N,N-dialkylformamidine intermediates are purified by flash-column chromatography and the purified intermediates are then treated with an amine (typically, 2.5 equiv) in the presence of scandium triflate (10 mol %) in ether to form in high yields the products of transamidation. In a second procedure, N'-acyl-N,N-dialkylformamidines are generated in situ and, without isolation, are subjected to transamidation in the presence of zirconium chloride (0.5 equiv) and an amine (typically 2 equiv). A variety of different primary amides and amines are found to undergo efficient transamidation using the methods described.

  DOI：

  10.1021/ja066728i

文献信息

• Enantioseparation of Sulfoxides and Nitriles by Inclusion Crystallization with Chiral Organic Salts Based on <scp>l</scp> -Phenylalanine
  作者：Koichi Kodama、Hayato Kanai、Yuki Shimomura、Takuji Hirose

  DOI：10.1002/ejoc.201800003

  日期：2018.4.17

  Enantioseparation of nitriles (up to 92 % ee) and sulfoxides (up to 98 % ee) by inclusion crystallization with chiral organic salts of 4‐hydroxybenzoic acids and a chiral primary amine derived from l‐phenylalanine is described. This is the first example of the direct enantioseparation of aromatic nitriles without other functional groups.

  描述了通过与4-羟基苯甲酸的手性有机盐和衍生自l-苯丙氨酸的手性伯胺进行夹杂结晶，将腈（至多92％ee）和亚砜（至多98％ee）对映异构体分离。这是没有其他官能团的芳族腈直接对映体分离的第一个例子。
• Reductive acylation of α-keto azides derived from<scp>L</scp>-amino acids using N-protected<scp>L</scp>-aminothiocarboxylic S-acids
  作者：M. Anthony Mckervey、Michael B. O'Sullivan、Peter L. Myers、Richard H. Green

  DOI：10.1039/c39930000094

  日期：——

  Several homochiral N-protected α-aminothiocarboxylic S-acids have been synthesised from natural amino acids and used for reductive acylation of homochiral α,α′-amino keto azides, also derived from natural amino acids.

  已从天然氨基酸合成了几种手性N-保护的α-氨基硫羧酸S-酸，并将其用于手性α,α'-氨基酮叠氮化物的还原酰化反应，这些手性α,α'-氨基酮叠氮化物同样源自天然氨基酸。
• Catalytic Dehydrative Peptide Synthesis with <i>gem</i>-Diboronic Acids
  作者：Kenichi Michigami、Tatsuhiko Sakaguchi、Yoshiji Takemoto

  DOI：10.1021/acscatal.9b03894

  日期：2020.1.3

  Alkane-gem-diboronic acids have emerged as versatile organoboron catalysts for dehydrative amidation of α-amino acids. A phenol-substituted multiboron catalyst with a B–C–B structure outperformed simple arylboronic acids in the condensation of α-amino acids with suppressed epimerization of electrophiles. gem-diboronic acid catalysis were compatible with various O, N, and S-functionalized α-amino acids bearing N-protecting

  烷烃-宝石-二硼酸已经成为用于α-氨基酸脱水酰胺化的通用有机硼催化剂。具有α–C–B结构的苯酚取代的多硼催化剂在α-氨基酸的缩合和亲电异构体的抑制作用方面优于简单的芳基硼酸。宝石-二硼酸催化与各种带有N-保护基团的O，N和S-官能化的α-氨基酸兼容，这些保护基团包括肽合成中常用的氨基甲酸酯（Boc，Cbz，Fmoc）。ñ-三氟乙酰基保护作用使室温下空前的催化脱水肽合成成为可能。初步的机理研究表明，宝石-二硼酸的羧酸盐结合性质与芳基硼酸对羧酸的活化作用正交。宝石-二硼酸的独特反应性将为轻度催化肽缩合打开前景。
• Aziridine derivatives, their production and use
  申请人：Takeda Chemical Industries, Ltd.

  公开号：US05668128A1

  公开（公告）日：1997-09-16

  The present invention relates to a compound of the formula: ##STR1## wherein R.sub.1 and Q are independently an optionally esterified or amidated carboxyl group; R.sub.2 is hydrogen, an acyl group or an optionally substituted hydrocarbon residue; X is a divalent hydrocarbon residue which may be substituted; or a salt thereof, which is useful as prophylactic and therapeutic agents of bone diseases and as agents for inhibiting thiol protease.

  本发明涉及一种化合物，其化学式为：##STR1## 其中R.sub.1和Q分别是可选择酯化或酰胺化的羧基；R.sub.2是氢、酰基或可选择取代的碳氢残基；X是可能被取代的二价碳氢残基；或其盐，可用作预防和治疗骨疾病的药剂以及抑制硫醇蛋白酶的药剂。
• Dual‐protected amino acid derivatives as new antitubercular agents
  作者：Pedro P. Castro、Débora L. Campos、Fernando R. Pavan、Giovanni W. Amarante

  DOI：10.1111/cbdd.13315

  日期：2018.8

  drug-resistant rates. In an attempt to develop new antitubercular agents, 35 compounds were synthesized, most of them bearing a carbamate and enantiopure amino acid moiety. These compounds had their activity evaluated toward a Mycobacterium tuberculosis strain (ATCC 27294) and cytotoxicity against fibroblast MRC-5 cells (ATCC CCL-171). Three of the prepared derivatives presented a good antimicrobial inhibition

  结核病是一种传染病，发病率高，耐药率不断上升。为了开发新的抗结核药，合成了35种化合物，其中大多数带有氨基甲酸酯和对映体纯氨基酸部分。评估了这些化合物对结核分枝杆菌菌株的活性（ATCC 27294）和对成纤维细胞MRC-5细胞的细胞毒性（ATCC CCL-171）。所制备的三种衍生物具有良好的抗菌抑制作用，其中两种具有中等的细胞毒性。亲脂性似乎在细胞生长活性中起着至关重要的作用，对于具有较高logP的衍生物而言，其效果最佳。