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6-Deoxy-1,2:3,4-di-O-iso­propyl­idene-α-d-galacto-heptodialdo-1,5-pyran­ose di­phenyl di­thio­acetal

✍ Scribed by Weaver, Travis D. ;Norris, Peter ;Zeller, Matthias

Publisher
International Union of Crystallography
Year
2004
Tongue
English
Weight
180 KB
Volume
60
Category
Article
ISSN
1600-5368

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✦ Synopsis

The structure of the title compound, C 25 H 30 O 5 S 2 , was determined by single-crystal X-ray diffraction at 100 K. The bond angles of the dithiane unit as well as the bond lengths of the whole molecule are within the expected ranges.

📜 SIMILAR VOLUMES

3-Azido-3-deoxy-2,2′:5,6-di-O-iso­propyl
3-Azido-3-deoxy-2,2′:5,6-di-O-iso­propyl­idene-2-C-hydro­xmethyl-d-gulono-1,4-lactone
✍ Harding, Christopher C. ;Shallard-Brown, Howard ;Watkin, David J. ;Soengas, Raqu 📂 Article 📅 2004 🏛 International Union of Crystallography 🌐 English ⚖ 897 KB

Single-crystal X-ray study T = 120 K Mean '(C±C) = 0.005 A Ê R factor = 0.045 wR factor = 0.108 Data-to-parameter ratio = 9.3 For details of how these key indicators were automatically derived from the article, see http://journals.iucr.org/e.

2,2′:5,6-Di-O-iso­propyl­idene-2-C-hydro
2,2′:5,6-Di-O-iso­propyl­idene-2-C-hydro­xymethyl-d-talono-1,4-lactone
✍ Harding, Christopher C. ;Watkin, David J. ;Cowley, Andrew R. ;Soengas, Raquel ;S 📂 Article 📅 2005 🏛 International Union of Crystallography 🌐 English ⚖ 410 KB

A second crystalline diacetonide, the title compound, C 13 H 20 O 7 , has been isolated from the sequential treatment of d-tagatose with aqueous sodium cyanide, followed by acetone in the presence of acid. Structural ambiguities with regard to the size of both the lactone and ketal rings are resolve