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布他比妥和甲硫比妥——2-硫代巴比妥酸的5,5-二取代衍生物,形成相同类型的氢键链。

Buthalital and methitural - 5,5-substituted derivatives of 2-thio-barbituric acid forming the same type of hydrogen-bonded chain.

作者信息

Gelbrich Thomas, Griesser Ulrich J

机构信息

University of Innsbruck, Institute of Pharmacy, Innrain 52, 6020 Innsbruck, Austria.

出版信息

Acta Crystallogr E Crystallogr Commun. 2017 Nov 21;73(Pt 12):1908-1912. doi: 10.1107/S205698901701653X. eCollection 2017 Dec 1.

DOI:10.1107/S205698901701653X
PMID:29250413
原文链接:https://pmc.ncbi.nlm.nih.gov/articles/PMC5730250/
Abstract

The mol-ecule of buthalital, (I) [systematic name: 5-(2-methyl-prop-yl)-5-(prop-2-en-1-yl)-2-sulfanyl-idene-1,3-diazinane-4,6-dione], CHNOS, exhibits a planar pyrimidine ring, whereas the pyrimidine ring of methitural, (II) [systematic name: 5-(1-methyl-but-yl)-5-[2-(methyl-sulfan-yl)eth-yl]-2-sulfanyl-idene-1,3-diazinane-4,6-dione], CHNOS, is slightly puckered. (I) and (II) contain the same hydrogen-bonded chain structure in which each mol-ecule is connected, four N-H⋯O=C hydrogen bonds, to two other mol-ecules, resulting in a hydrogen-bonded chain displaying a sequence of (8) rings. The same type of N-H⋯O=C hydrogen-bonded chain has previously been found in several 5,5-disubstituted derivatives of barbituric acid which are chemically closely related to (I) and (II).

摘要

丁巴比妥分子(I)[系统名称:5 -(2 - 甲基丙基)-5 -(2 - 丙烯 - 1 - 基)-2 - 硫亚基 - 1,3 -二嗪烷 - 4,6 -二酮],化学式为CHNOS,具有一个平面嘧啶环,而美索比妥分子(II)[系统名称:5 -(1 - 甲基丁基)-5 - [2 -(甲硫基)乙基]-2 - 硫亚基 - 1,3 -二嗪烷 - 4,6 -二酮],化学式为CHNOS,其嘧啶环略有褶皱。(I)和(II)具有相同的氢键链结构,其中每个分子通过四个N - H⋯O = C氢键与另外两个分子相连,形成一个具有(8)个环序列的氢键链。之前在几种与(I)和(II)化学结构密切相关的巴比妥酸5,5 -二取代衍生物中也发现了相同类型的N - H⋯O = C氢键链。

https://cdn.ncbi.nlm.nih.gov/pmc/blobs/1e3a/5730250/ce1680ac1a8c/e-73-01908-fig5.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/1e3a/5730250/f95817448993/e-73-01908-fig1.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/1e3a/5730250/164547d61478/e-73-01908-fig2.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/1e3a/5730250/85d63ab3b26d/e-73-01908-fig3.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/1e3a/5730250/635088fcb092/e-73-01908-fig4.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/1e3a/5730250/ce1680ac1a8c/e-73-01908-fig5.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/1e3a/5730250/f95817448993/e-73-01908-fig1.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/1e3a/5730250/164547d61478/e-73-01908-fig2.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/1e3a/5730250/85d63ab3b26d/e-73-01908-fig3.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/1e3a/5730250/635088fcb092/e-73-01908-fig4.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/1e3a/5730250/ce1680ac1a8c/e-73-01908-fig5.jpg

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