N-(carbobenzoxy)-L-serine-L-proline methyl ester | 16296-22-3

• 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: N-(carbobenzoxy)-L-serine-L-proline methyl ester
• 英文别名: N-(carbobenzoxy)-L-seryl-L-proline methyl ester；methyl ((benzyloxy)carbonyl)-L-serylprolinate；Z-Ser-Pro-OMe；methyl (2S)-1-[(2S)-3-hydroxy-2-(phenylmethoxycarbonylamino)propanoyl]pyrrolidine-2-carboxylate
• CAS: 16296-22-3
• 化学式: C₁₇H₂₂N₂O₆
• 分子量: 350.371
• InChiKey: BTSKOMRRLPEGLG-KBPBESRZSA-N

计算性质

• 辛醇/水分配系数(LogP)：
  0.44
• 重原子数：
  25.0
• 可旋转键数：
  6.0
• 环数：
  2.0
• sp3杂化的碳原子比例：
  0.47
• 拓扑面积：
  105.17
• 氢给体数：
  2.0
• 氢受体数：
  6.0

反应信息

• 作为反应物：
  描述：

  N-(carbobenzoxy)-L-serine-L-proline methyl ester 在 palladium on activated charcoal 吡啶 、 4 A molecular sieve 、 氢气 、 sodium methylate 、 silver trifluoromethanesulfonate 、 氰化汞 、 溶剂黄146 、 mercury dibromide 作用下， 以 甲醇 、 乙醇 、 二氯甲烷 为溶剂， 反应 135.5h， 生成 (2,3,4,6-tetra-O-acetyl-β-D-glucopyranosyl)-(1<*>6)-(2,3,4-tri-O-acetyl-α-D-mannopyranosyl)-(1<*>6)-(2,3,4-tri-O-acetyl-α-D-mannopyranosyl)-(1<*>3)-L-serine-L-proline methyl ester
  参考文献：
  名称：

  具有植物抗毒素激动剂活性的糖肽的合成I.三糖基L-丝氨酸-1-脯氨酸二肽的合成

  摘要：

  描述了用于植物抗毒素激动剂活性糖蛋白的模型化合物的立体控制合成。二糖2,3,4,6-四-O-乙酰基-β-D-吡喃葡萄糖基-（1-> 6）-2,3,4-三-O-乙酰基-α-D-甘露吡喃糖基的糖基化三氯乙酰亚氨酸酯，与N-（咔啉氧基）-（2,3,4-三-O-乙酰基-α-D-甘露吡喃糖基）-（1-> 3）-L-丝氨酸甲酯或N-（咔啉氧基）-（通过使用AgOTf，将2,3,4-三-O-乙酰基-α-D-甘露吡喃糖基）-（1-> 3）-L-丝氨酸-L-脯氨酸甲酯得到所需的三糖丝氨酸或三糖丝氨酸-脯氨酸衍生物，将其转化为β-D-吡喃葡萄糖基-（1-> 6）-α-D-甘露吡喃糖基-（1-> 6）-α-D-甘露吡喃糖基-（1-> 3）- L-丝氨酸和三糖基-（1-> 3）-L-丝氨酸-L-脯氨酸通过去除N-碳苯甲氧基基团，然后进行脱酰作用。

  DOI：

  10.1016/0008-6215(94)84227-2
• 作为产物：
  描述：

  N-苄氧羰基-L-丝氨酸 、 L-脯氨酸甲酯 在 1-羟基苯并三唑 、 N,N'-二环己基碳二亚胺 作用下， 以40%的产率得到N-(carbobenzoxy)-L-serine-L-proline methyl ester
  参考文献：
  名称：

  Protein Backbone Modification by Novel C.alpha.-C Side-Chain Scission

  摘要：

  alpha-Ketoamide (-NH-CO-CO-) units in intact peptides are generated from Ser/Thr residues via Ru(VIII)catalyzed C-alpha-C side-chain scission. Facets associated with this novel cu-carbon modification have been probed with 75 peptides chosen to represent every possible peptide environment. The reactions were carried out at room temperature with in situ generated Ru(VIII) in biphasic (CH3CN/CCl4/pH 3 phosphate buffer, 1:1:2 v/v) medium. Whereas Ser/Thr residues placed at the C-terminal end in peptides undergo N-C bond scission leading to des-Ser/Thr peptide amides-thus acting as Gly equivalents in simulating the alpha-amidating action of pituitary enzymes-those located at the N-terminal or nonterminal or even at the C-terminal position (protected as amide) were found to undergo oxidative C-C bond scission (involving C-alpha and C side-chain bond), resulting in the generation of alpha-ketoamide (-NH-CO-CO-) units in the intact peptide backbone. The difference in the products arising from C-alpha-C side-chain scission of Ser/Thr esters and amides is rationalized on the basis of a common mechanism involving either oxaloesters [Pep-NH-CO-COX; X = OMe] or oxalamides [X = NH2 or NH-Pep] arising from the oxidation of initially formed carbinolamide intermediates [Pep-NH-CH(OH)-COX],wherein, while the former are shown to undergo hydrolysis to terminal amides [Pep-NH2], the oxalamides are found to be stable to hydrolysis. Ancillary noteworthy findings are those of peptide bond scission when contiguous Ser-Ser/Thr-Thr residues are present and the oxidative cleavage at C-terminal Tyr/Trp sites generating des amides. The oxidative methodology presented here is mild, simple, and practical and proceeds with chiral retention. The insensitivity of a large number of amino acid residues, such as Gly, Ala, Leu, Asn, Gln, Asp, Glu, Pro, Arg, Phe, Lys, Val, and Aib, and N-protecting groups, such as Boc, Z, and Bz, toward Ru(VIII) under the experimental conditions should make this methodology practical and useful. Sulfur-containing amino acids Cys and Met get oxidized to sulfones in the products.

  DOI：

  10.1021/ja00094a008

文献信息

• Syntheses of triglycosyl tetrapeptides and a hexaglycosyl tetrapeptide
  作者：Tadahiro Takeda、Takuya Kanemitsu、Noriko Shimizu、Yukio Ogihara、Machiko Matsubara

  DOI：10.1016/0008-6215(96)00004-3

  日期：1996.3

  triglycosyl-seryl-proline derivatives. The N- as well as C-terminus of these triglycosyl dipeptides could be deblocked selectively to give compounds 14 and 16, which are versatile intermediates for the completion of model compound synthesis of glycopeptide. Triglycosyl tetrapeptides (18, 21) and hexaglycosyl tetrapeptide (23) have been prepared by the convergent block synthesis.

  描述了植物抗毒素激发子活性糖蛋白的模型化合物的立体控制合成。三糖，2,3,4,6-四-O-乙酰基-β-D-吡喃葡萄糖基-（1-> 6）-2,3,4-三-O-乙酰基-α-D-甘露吡喃糖基的糖基化-（1-> 6）-2,3,4-三-O-乙酰基-α-D-甘露吡喃糖基三氯乙酰亚胺酸酯（12），与N-（9-芴基甲氧基羰基）-L-丝氨酰-L-脯氨酸苄酯（ 3）或使用BF3的N-（碳苯甲氧基）-L-丝氨酰-L-脯氨酸甲酯（4）OEt2得到三糖基-丝氨酰-脯氨酸衍生物。这些三糖基二肽的N-末端和C-末端可以被选择性地解封，得到化合物14和16，它们是完成糖肽模型化合物合成的通用中间体。三糖基四肽（18，
• Jaouadi, M.; Selve, C.; Dormoy, J. R., Bulletin de la Societe Chimique de France, 1984, vol. 2, # 9-10, p. 409 - 412
  作者：Jaouadi, M.、Selve, C.、Dormoy, J. R.、Castro, B.

  DOI：——

  日期：——
• Impact of Dehydroamino Acids on the Structure and Stability of Incipient 3₁₀-Helical Peptides
  作者：Daniel Joaquin、Michael A. Lee、David W. Kastner、Jatinder Singh、Shardon T. Morrill、Gracie Damstedt、Steven L. Castle

  DOI：10.1021/acs.joc.9b02747

  日期：2020.2.7

  A comparative study of the impact of small, medium-sized, and bulky alpha,beta-dehydroamino acids (Delta AAs) on the structure and stability of Balarams incipient 3(10)-helical peptide (1) is reported. Replacement of the N-terminal Aib residue of 1 with a Delta AA afforded peptides 2a-c that maintained the 3(10)-helical shape of 1. In contrast, installation of a Delta AA in place of Aib-3 yielded peptides 3a-c that preferred a beta-sheet-like conformation. The impact of the Delta AA on peptide structure was independent of size, with small (Delta Ala), medium-sized (Z-Delta Abu), and bulky (Delta Val) Delta AAs exerting similar effects. The proteolytic stabilities of 1 and its analogs were determined by incubation with Pronase. Z-Delta Abu and Delta Val increased the resistance of peptides to proteolysis when incorporated at the 3-position and had negligible impact on stability when placed at the 1-position, whereas Delta Ala-containing peptides degraded rapidly regardless of position. Exposure of peptides 2a-c and 3a-c to the reactive thiol cysteamine revealed that Delta Ala-containing peptides underwent conjugate addition at room temperature, while Z-Delta Abu- and Delta Val-containing peptides were inert even at elevated temperatures. These results suggest that both bulky and more accessible medium-sized Delta AAs should be valuable tools for bestowing rigidity and proteolytic stability on bioactive peptides.