Crystal structure of N-{N-[N-(tert-butoxycarbonyl)-L-α-aspartyl]-L-α-aspartyl}-L-α-aspartic acid 14,24,34-trimethyl ester 31-2-oxo-2-phenylethyl ester {Boc-[Asp(OMe)]3-OPac}
Crystal structure of N-{N-[N-(tert-butoxycarbonyl)-L-α-aspartyl]-L-α-aspartyl}-L-α-aspartic acid 14,24,34-trimethyl ester 31-2-oxo-2-phenylethyl ester {Boc-[Asp(OMe)]3-OPac}
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N-{N-[N-(叔丁氧基羰基)-L-α-天冬氨酰]-L-α-天冬氨酰}-L-α-天冬氨酸14,24,34-三甲酯31-2-氧代的晶体结构-2-苯乙酯{Boc-[Asp(OMe)]3-OPac}
DOI：
10.1107/s2056989019004596
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发表时间：
2019
期刊：
影响因子：
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通讯作者：
Doi Mitsunobu
中科院分区：
文献类型：
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作者：
Kato Takuma;Kishimoto Saki;Asano Akiko;Doi Mitsunobu
在标题同源三肽{Boc-[Asp(OMe)]3-OPac}，C28H37N3O13中，所有肽键均采用相对于NH和C=O基团的s-反式构象。在晶体中，N—H⋯O氢键导致沿b轴方向延伸的无限平行的β-折叠结构。肽 N 末端的 Boc 保护基在两个位点上无序，占用因子分别为 0.504 (5) 和 0.496 (5)。
In the title homotripeptide {Boc-[Asp(OMe)]3-OPac}, C28H37N3O13, all peptide bonds adopt an s-trans conformation with respect to the N—H and C=O groups. In the crystal, N—H⋯O hydrogen bonds result in an infinite parallel β-sheet structure running along the b-axis direction. The Boc protecting group at the N-terminus of the peptide is disordered over two sites with occupancy factors of 0.504 (5) and 0.496 (5).