𝔖 Bobbio Scriptorium
✦   LIBER   ✦

3,9-Di­methoxy-6a,11a-di­hydro-6H-benzo­[4,5]­furo­[3,2-c]­chromene-4,10-diol monohydrate

✍ Scribed by Aree, Thammarat ;Tip-pyang, Santi ;Paramapojn, Sompol ;Chaichit, Narongsak

Publisher
International Union of Crystallography
Year
2003
Tongue
English
Weight
319 KB
Volume
59
Category
Article
ISSN
1600-5368

No coin nor oath required. For personal study only.

📜 SIMILAR VOLUMES

2-Amino-6-methoxy-4-(4-methoxy­phenyl)-9
2-Amino-6-methoxy-4-(4-methoxy­phenyl)-9,10-di­hydro-4H-benzo­[f]­chromene-3-carbo­nitrile
✍ Yu, Chen-Xia ;Shi, Da-Qing ;Wang, Xiang-Shan ;Zhuang, Qi-Ya 📂 Article 📅 2004 🏛 International Union of Crystallography 🌐 English ⚖ 346 KB

The title compound, C 22 H 20 N 2 O 3 , was synthesized by the reaction of 4-methoxybenzaldehyde, 7-methoxy-2-tetralone and malononitrile in the presence of triethylbenzylammonium chloride in an aqueous medium. X-ray analysis reveals that the pyran ring and the fused six-membered ring adopt boat and

3,4a-Di­chloro-10a-(3-chloro-6-hydroxy-2
3,4a-Di­chloro-10a-(3-chloro-6-hydroxy-2,2,6-tri­methyl­cyclo­hexyl­methyl)-6,8-di­hydroxy-2,2,7-tri­methyl-3,4,4a,10a-tetra­hydro-2H-benzo­[g]­chromene-5,10-dione
✍ Soria-Mercado, Irma E. ;Jensen, Paul R. ;Fenical, William ;Kassel, Scott ;Golen, 📂 Article 📅 2004 🏛 International Union of Crystallography 🌐 English ⚖ 220 KB

Single-crystal X-ray study T = 218 K Mean '(C±C) = 0.003 A Ê R factor = 0.038 wR factor = 0.095 Data-to-parameter ratio = 18.1 For details of how these key indicators were automatically derived from the article, see http://journals.iucr.org/e.

(3aS,5aR,10aS,11aR)-2,2-Di­methyl-3a,9,1
(3aS,5aR,10aS,11aR)-2,2-Di­methyl-3a,9,10,10a,11,11a-hexa­hydro-5aH-1,3-dioxolo­[4,5:3′,4′]­furo­[2′,3′-f]­indolizin-8(4H)-one
✍ Vrábel, Viktor ;Kožíšek, Jozef ;Langer, Vratislav ;Marchalín, Štefan ;Bobošíková 📂 Article 📅 2004 🏛 International Union of Crystallography 🌐 English ⚖ 242 KB

Single-crystal X-ray study T = 183 K Mean '(C±C) = 0.003 A Ê R factor = 0.035 wR factor = 0.082 Data-to-parameter ratio = 12.6 For details of how these key indicators were automatically derived from the article, see http://journals.iucr.org/e.

6,6,8a-Tri­methyl-3a,6,7,8a-tetra­hydro­
6,6,8a-Tri­methyl-3a,6,7,8a-tetra­hydro­benzo­[b]­furo­[3,2-d]­furan-2,4(3H,5H)-dione
✍ Nagaraj, Basavegowda ;Yathirajan, Hemmige S. ;Nagaraja, Padmarajaiah ;Lynch, Dan 📂 Article 📅 2005 🏛 International Union of Crystallography 🌐 English ⚖ 106 KB

The structure of the title compound, C 13 H 16 O 4 , comprises a non-planar chiral molecule where the cyclohexene double bond is distinctly shorter [1.335 (2) A ˚] than the neighbouring C-C single bonds (>1.4 A ˚).