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5,7-Dimeth­oxy-2-phenyl-4H-1-benzopyran-4-one chloro­form solvate

✍ Scribed by Teh, Jeannie Bee-Jan ;Fun, Hoong-Kun ;Razak, Ibrahim Abdul ;Chantrapromma, Suchada ;Boonnak, Nawong ;Karalai, Chatchanok

Publisher
International Union of Crystallography
Year
2005
Tongue
English
Weight
265 KB
Volume
61
Category
Article
ISSN
1600-5368

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✦ Synopsis

The title compound, C 17 H 14 O 4 ÁCHCl 3 , was isolated from the rhizomes of Kaempferia parviflora. The benzopyran-4-one ring system and the phenyl substituent are approximately coplanar. The crystal structure is stabilized bystacking interactions between the benzopyran-4-one ring system of inversion-related molecules stacked along the c axis, and C-HÁ Á ÁO and C-HÁ Á Á interactions.

📜 SIMILAR VOLUMES

5-Hydr­oxy-3,7-dimeth­oxy-2-phenyl-4H-1-
5-Hydr­oxy-3,7-dimeth­oxy-2-phenyl-4H-1-benzopyran-4-one
✍ Fun, Hoong-Kun ;Razak, Ibrahim Abdul ;Boonnak, Nawong ;Laphookhieo, Surat ;Chant 📂 Article 📅 2005 🏛 International Union of Crystallography 🌐 English ⚖ 199 KB

The title compound, C 17 H 14 O 5 , a flavone, was isolated from the rhizomes of Kaempferia parviflora. There are two crystallographically independent molecules in the asymmetric unit. The molecular structure is stabilized by intramolecular O-HÁ Á ÁO and C-HÁ Á ÁO hydrogen bonds. C-HÁ Á ÁO intermole

5-Hydr­oxy-7-meth­oxy-2-(4-methoxy­phen­
5-Hydr­oxy-7-meth­oxy-2-(4-methoxy­phen­yl)-4H-1-benzopyran-4-one
✍ Teh, Jeannie Bee-Jan ;Fun, Hoong-Kun ;Razak, Ibrahim Abdul ;Chantrapromma, Sucha 📂 Article 📅 2005 🏛 International Union of Crystallography 🌐 English ⚖ 300 KB

The title compound, C 17 H 14 O 5 , a flavone, was isolated from the rhizomes of Kaempferia parviflora. The benzopyran-4-one ring system and the methoxyphenyl substituent are approximately coplanar. The molecules are linked via intermolecular C-HÁ Á ÁO hydrogen bonds to form chains.

4-Methyl-7-phenyl­sulfonamido-2H-1-benzo
4-Methyl-7-phenyl­sulfonamido-2H-1-benzopyran-2-one
✍ Yang, Shu-Ping ;Han, Li-Jun ;Wang, Da-Qi 📂 Article 📅 2006 🏛 International Union of Crystallography 🌐 English ⚖ 490 KB

Single-crystal X-ray study T = 298 K Mean (C-C) = 0.005 A R factor = 0.045 wR factor = 0.124 Data-to-parameter ratio = 12.5 For details of how these key indicators were automatically derived from the article, see http://journals.iucr.org/e.

2,3-Dihydro-7,8-dihydr­oxy-3-[(4-methoxy
2,3-Dihydro-7,8-dihydr­oxy-3-[(4-methoxy­phenyl)methyl­ene]-4H-1-benzopyran-4-one
✍ Chantrapromma, Suchada ;Boonsri, Sompong ;Fun, Hoong-Kun ;Anjum, Shazia ;Kanjana 📂 Article 📅 2006 🏛 International Union of Crystallography 🌐 English ⚖ 241 KB

The title compound, also known as intricatinol, C~17~H~14~O~5~, is a homoisoflavanoid that was isolated for the first time from the twigs and stems of __Caesalpinia digyna__ Rottler. The pyran ring is in an envelope form. O—H...O intramolecular hydrogen bonds are observed. Symmetry-related molecules