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An ortho­rhom­bic modification of (R)-(−)-8-hydr­oxy-3-methyl-3,4-dihydro-1H-2-benzopyran-1-one [(R)-(−)-mellein]

✍ Scribed by Flörke, Ulrich ;Krohn, Karsten ;Zia-Ullah, ;Hussain, Hiayat

Publisher
International Union of Crystallography
Year
2006
Tongue
English
Weight
190 KB
Volume
62
Category
Article
ISSN
1600-5368

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✦ Synopsis

An orthorhombic modification of

📜 SIMILAR VOLUMES

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

Stereoselective Synthesis of (3R)-3,4-Di
Stereoselective Synthesis of (3R)-3,4-Dihydro-6,8-dimethoxy-3-undecyl- 1H-[2]benzopyran-1-one and Derivatives, Metabolites from Ononis natrix
✍ Aamer Saeed 📂 Article 📅 2003 🏛 John Wiley and Sons 🌐 German ⚖ 124 KB

## Abstract A short stereoselective synthesis of (3__R__)‐3,4‐dihydro‐6,8‐dimethoxy‐3‐undecyl‐1__H__‐[2]benzopyran‐1‐one and derivatives isolated from __Ononis natrix__ has been described. Condensation of dodecanoyl chloride with 3,5‐dimethoxyhomophthalic acid afforded 6,8‐dimethoxy‐3‐undecylisocou