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1-(1,1-Dioxo-3′-de­oxy-2,3,5,6-tetra­hydro-1,4-oxathiine-β-d-ribofuranos­yl)uracil: a bicyclic nucleoside analogue

✍ Scribed by Sun, Jing-Bo ;Yang, Hua ;Wu, Jin-Chang

Book ID
104489465
Publisher
International Union of Crystallography
Year
2007
Tongue
English
Weight
216 KB
Volume
63
Category
Article
ISSN
1600-5368

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✦ Synopsis

In the title compound, C 11 H 14 N 2 O 7 S, the furanose ring adopts a 3 0 -endo,4 0 -exo conformation 4 T 3 . The orientation of the pyrimidine ring with respect to the sugar group is anti. The crystal packing is stabilized by intermolecular N-HÁ Á ÁO and O-HÁ Á ÁO hydrogen bonds.

📜 SIMILAR VOLUMES

2a-(4-Chloro­phen­yl)-2-(2,5-dioxo-3-pyr
2a-(4-Chloro­phen­yl)-2-(2,5-dioxo-3-pyrazolin-1-yl)-4-phenyl-2,2a,3,4-tetra­hydro-1H-azeto[2,1-d][1,5]benzothia­zepin-1-one
✍ Zhang, Ping ;Du, Cai-Yun ;Li, Yuan 📂 Article 📅 2006 🏛 International Union of Crystallography 🌐 English ⚖ 129 KB

The conformation of the seven-membered ring in the title molecule, C 27 H 19 ClN 2 O 3 S, is that of a chair. The 2,5-dioxo-3pyrazolin-1-yl and 4-chlorophenyl groups attached to thelactam ring are in cis positions.

Methyl 1′-(2-hydr­oxy-1,3-dioxo-2,3-dihy
Methyl 1′-(2-hydr­oxy-1,3-dioxo-2,3-dihydro-1H-indan-2-yl)-2-oxo-5′,6′,7′,7a′-tetra­hydro­spiro­[1H-indole-3,3′(2H,2′H)-1′H-pyrrolizine]-1′-carboxyl­ate
✍ Kumar, B. K. Satis ;Gayathri, D. ;Velmurugan, D. ;Ravikumar, K. ;Ramesh, E. 📂 Article 📅 2007 🏛 International Union of Crystallography 🌐 English ⚖ 291 KB

The two pyrrolidine rings in the title compound, C~25~H~22~N~2~O~6~, adopt envelope conformations. Molecules are stabilized by intramolecular O—H...O hydrogen bonds, and linked into centrosymmetric dimers by intermolecular N—H...O hydrogen bonds.

5a-Hydr­oxy-9-meth­oxy-11-(3-methyl-2-bu
5a-Hydr­oxy-9-meth­oxy-11-(3-methyl-2-buten­yl)-12-(2-methyl-1-propen­yl)-2,3,11,12-tetra­hydro-1H,5H-pyrrolo[1′′,2′′:4′,5′]pyrazino[1′,2′:1,6]pyrido[3,4-b]indole-5,6,14(5aH,14aH)-trione
✍ Wang, Fa-Zuo ;Zhang, Min ;Sun, Wei ;Gu, Qian-Qun ;Zhu, Wei-Ming 📂 Article 📅 2007 🏛 International Union of Crystallography 🌐 English ⚖ 115 KB

The title compound, C 27 H 31 N 3 O 5 , is also known as 13oxofumitremorgin B. Intermolecular O-HÁ Á ÁO and C-HÁ Á ÁO hydrogen bonds stabilize the crystal structure.

1,3:4,6-Bis(1,4-diphenyl­ethyn­yl-2,3-xy
1,3:4,6-Bis(1,4-diphenyl­ethyn­yl-2,3-xylylene)tetra­hydro-3a,6a-bis­(ethoxy­carbon­yl)imidazo[4,5-d]imidazole-2,5(1H,3H)-dione, a mol­ecular clip based on di(ethoxy­carbon­yl)glycoluril
✍ She, Neng-Fang ;Guo, Hui-Zhen ;Wu, An-Xin 📂 Article 📅 2005 🏛 International Union of Crystallography 🌐 English ⚖ 117 KB

Bis(1, tetrahydro-3a,6a-bis(ethoxycarbonyl)imidazo[4,5-d]imidazole-2,5(1H,3H)-dione, a molecular clip based on di(ethoxycarbonyl)glycoluril Neng-Fang She,