苄基N-(二苯基亚甲基)-L-丝氨酸酯 | 145362-72-7

• 分子结构分类: 有机化合物 - 苯类化合物 - 苯和取代衍生物
• 中文名称: 苄基N-(二苯基亚甲基)-L-丝氨酸酯
• 英文名称: benzyl N-(diphenylmethylene)-L-serinate
• 英文别名: benzyl (2S)-2-(benzhydrylideneamino)-3-hydroxypropanoate
• CAS: 145362-72-7
• 化学式: C₂₃H₂₁NO₃
• 分子量: 359.425
• InChiKey: VPAWZKGPNOLUAC-NRFANRHFSA-N

物化性质

• 熔点：
  78-80 °C
• 沸点：
  514.6±50.0 °C(Predicted)
• 密度：
  1.11±0.1 g/cm3(Predicted)
• 溶解度：
  可溶于氯仿、二氯甲烷

计算性质

• 辛醇/水分配系数(LogP)：
  4.3
• 重原子数：
  27
• 可旋转键数：
  8
• 环数：
  3.0
• sp3杂化的碳原子比例：
  0.13
• 拓扑面积：
  58.9
• 氢给体数：
  1
• 氢受体数：
  4

反应信息

• 作为反应物：
  描述：

  苄基N-(二苯基亚甲基)-L-丝氨酸酯 在 2,4,6-三甲基吡啶 、 ammonium acetate 、 silver perchlorate 、 三苯基膦 作用下， 以 二氯甲烷 为溶剂， 反应 16.25h， 生成 N-diphenylmethylene-O-(3,4,6-tri-O-acetyl-2-acetamido-2-deoxy-α-D-galactopyranosyl)-L-serine benzyl ester
  参考文献：
  名称：

  Stereoselective synthesis of O-serinyl/threoninyl-2-acetamido-2-deoxy-α- or β-glycosides

  摘要：

  General glycosidation methodology has been developed which can selectively provide 2acetamido-2-deoxy-alpha- or beta-glycosides of beta-hydroxy-alpha-amino acid derivatives [glucopyranoside- (8, 43), galactopyranoside- (9, 13), mannopyranoside- (10), lactoside analogs (11, 38) and 3-O-beta-galactopyranosyl-mannopyranoside (12)] stereoselectively in excellent yield from the highly nucleophilic a-imino esters (Schiff bases) of L-serine and L-threonine. Various glycosides were converted via their amino and acetamido derivatives to Fmoc-protected serinyl- or threoninyl-glycosides (24-28, 37, 41, 46) which are all suitable building blocks for the solid-phase synthesis of O-glycopeptides. Complete H-1- and C-13-NMR data are provided for all compounds.

  DOI：

  10.1016/0008-6215(95)00016-m
• 作为产物：
  描述：

  苯甲醇 在 对甲苯磺酸 作用下， 以 乙腈 、 苯 为溶剂， 反应 13.5h， 生成 苄基N-(二苯基亚甲基)-L-丝氨酸酯
  参考文献：
  名称：

  丝氨酸和苏氨酸席夫碱酯在BF3·Et2O存在下与β-端基过乙酸酯反应生成β-糖苷

  摘要：

  据报道，利用活化的席夫碱糖基受体对L-丝氨酸和L-苏氨酸的糖基化进行了改进的方法，这是已公开方法的较便宜且更有效的替代方法。使L-丝氨酸或L-苏氨酸苄基酯盐酸盐与CH 3 CN中的二芳基酮亚胺双-（4-甲氧基苯基）-甲亚胺在室温下反应，以优异的产率形成更具亲核性的席夫碱3a和3b。如1 H NMR所示，这些席夫碱在CDCl3中表现出环链互变异构现象。希夫碱3a和3b充当糖基受体，在室温下与简单的过乙酸乙酸供体反应，并以BF3·OEt2促进，以优异的收率和纯度提供相应的L-丝氨酸和L-苏氨酸O-连接的糖苷。二肽酯Schiff碱Ar2C = N-Ser-Val-OCH3 3e也反应生成β-糖苷，收率极高，且没有差向异构化。用微波辐射，反应在2至5分钟内完成。为了进一步研究该反应，研究了经典的AgOTf促进的D-吡喃葡萄糖基，乳糖基和麦芽糖基溴化物的Koenigs-Knorr反应，提供了35％至

  DOI：

  10.1080/07328303.2010.508295

文献信息

• General methods for .alpha.- or .beta.-O-Ser/Thr glycosides and glycopeptides. Solid-phase synthesis of O-glycosyl cyclic enkephalin analogs
  作者：Robin Polt、Lajos Szabo、Jennifer Treiberg、Yushun Li、Victor J. Hruby

  DOI：10.1021/ja00052a022

  日期：1992.12

  O-Linked glycopeptides have been efficiently synthesis using the highly nucleophilic α-imino esters (O'Donnell's Schiff bases) derived from L-serine (3a-c), L-threonine (4a,b), and a dipeptide ester (5). General methodology has been developed which can provide β-glycosides of β-hydroxy-α-amino acid derivatives 6-16 in excellent yield (63-94%) and excellent selectivity (>20:1) using Hanessian's modification

  使用衍生自 L-丝氨酸 (3a-c)、L-苏氨酸 (4a,b) 和二肽酯 (5) 的高度亲核性 α-亚氨基酯（O'Donnell's Schiff 碱）已有效合成 O-连接糖肽. 已开发出通用方法，可以使用 Hanessian 修饰或 Helferich 修饰以优异的产率 (63-94%) 和优异的选择性 (>20:1) 提供 β-羟基-α-氨基酸衍生物 6-16 的 β-糖苷。 Koenigs-Knorr 反应。同样，使用 Lemieux 的原位异构化方法实现了选择性 α-糖基化。丝氨酸/苏氨酸羟基的亲核性增加已被证明是由于分子内氢键连接到 N=CPh 2 部分。中间席夫碱的脱保护已被证明，
• Chemical Synthesis of α-<scp>d</scp>-Mannosylphosphate Serine Derivatives: A New Class of Synthetic Glycopeptides
  作者：Geert-Jan Boons、Galal Elsayed

  DOI：10.1055/s-2003-40344

  日期：——

  α-d-Mannosylphosphate serine derivatives were conveniently synthesized by reaction of benzyl or cyanoethyl phosphochloroamidites with 2,3,4,6-tetra-O-acetyl-d-mannose to give intermediate α-mannosyl phosphoramidites, which were successfully reacted with properly protected serine derivatives in the presence of 1H-tetrazole to give phosphite triesters which could be oxidized to phosphotriesters using t-BuOOH.

  通过苄基或氰基乙基磷酰氯酰胺与 2,3,4,6- O-四乙酰基-d-甘露糖反应得到中间体δ-甘露糖基磷酰胺，然后与适当保护的丝氨酸衍生物在 1H- 四氮唑存在下反应得到亚磷酸三酯，再用 t-BuOOH 将其氧化为磷酯，从而方便地合成了δ-d-甘露糖基磷酸丝氨酸衍生物。
• Solid-Phase Synthesis of O-Linked Glycopeptide Analogues of Enkephalin
  作者：Scott A. Mitchell、Matt R. Pratt、Victor J. Hruby、Robin Polt

  DOI：10.1021/jo005712m

  日期：2001.4.1

  The synthesis of 18 N-alpha -FMOC-amino acid glycosides for solid-phase glycopeptide assembly is reported. The glycosides were synthesized either from the corresponding O'Donnell Schiff bases or from N-alpha -FMOC-amino protected serine or threonine and the appropriate glycosyl bromide using Hanessian's modification of the Koenigs-Knorr reaction. Reaction rates of D-glycosyl bromides (e.g., acetobromoglucose) with the L- and D-forms of serine and threonine are distinctly different and can be rationalized in terms of the steric interactions within the two types of diastereomeric transition states for the D/L and D/D reactant pairs. The N-alpha -FMOC-protected glycosides [monosaccharides Xyl, Glc, Gal, Man, GlcNAc, and GalNAc; disaccharides Gal-beta (1-4)-Gle (lactose), Glc-beta-(1-4)-Glc (cellobiose), and Gal-alpha (1-6)-Glc (melibiose)] were incorporated into 22 enkephalin glycopeptide analogues. These peptide opiates bearing the pharmacophore H-Tyr-c[DCys-Gly-PheDCys]- were designed to probe the significance of the glycoside moiety and the carbohydrate-peptide linkage region in blood-brain barrier (BBB) transport, opiate receptor binding, and analgesia.
• Glucuronidation of serine and threonine
  作者：D. K. Alargov、P. S. Denkova、E. V. Golovinsky

  DOI：10.1007/bf00807605

  日期：——

  The synthesis of N-diphenylmethylene-O-(methyl(2,3,4-triO-acetyl)-beta-D-glucuronosyl)-threonine benzyl ester (2) and N-diphenylmethylene-O-(methyl(2,3,4-tri-O-acetyl)-alpha/beta-D-glucuronosyl)-serine benzyl ester (3) by Hanessian's modification of the Koenigs-Knorr reaction is presented. Highly nucleophilic benzophenone Schiff bases are used for the protection of the N-moiety of serine and threonine.
• US5470949A
  申请人：——

  公开号：US5470949A

  公开（公告）日：1995-11-28