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ChemInform Abstract: Chiral, Densely Functionalized Cycloheptanes from Carbohydrates. Part 1. The Nitrone Route.

โœ Scribed by Jose Marco-Contelles; Elsa de Opazo


Publisher
John Wiley and Sons
Year
2010
Weight
29 KB
Volume
30
Category
Article
ISSN
0931-7597

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โœฆ Synopsis


Chiral, Densely Functionalized Cycloheptanes from Carbohydrates. Part 1. The Nitrone Route.

-The first example of an intramolecular 1,3-dipolar cycloaddition of a chiral, acyclic 7-alkenyl tethered N-benzyl nitrone (IV) is described that provides a new and efficient asymmetric access to chiral, densely functionalized cycloheptanes such as (V) from carbohydrates.


๐Ÿ“œ SIMILAR VOLUMES


Chiral, densely functionalized cyclohept
โœ Josรฉ Marco-Contelles; Elsa de Opazo ๐Ÿ“‚ Article ๐Ÿ“… 1999 ๐Ÿ› Elsevier Science ๐ŸŒ French โš– 234 KB

The first intramolecular 1,3-dipolar cycloaddition of an acyclic, chiral, polyfunetionalized 7-alkenyl tethered N-benzyl nitrone is reported. This is a new and efficient approach for the synthesis of chiral, densely functionalized cycloheptanes from carbohydrates.

ChemInform Abstract: An Expeditious Rout
โœ H. OVAA; M. A. LEEUWENBURGH; H. S. OVERKLEEFT; G. A. VAN DER MAREL; J. H. VAN BO ๐Ÿ“‚ Article ๐Ÿ“… 2010 ๐Ÿ› John Wiley and Sons โš– 36 KB ๐Ÿ‘ 1 views

An Expeditious Route to the Synthesis of Highly Functionalized Chiral Oxepins from Monosaccharides. -A novel and versatile route to highly functionalized chiral oxepins [cf. (VI) and (IX)] derived from partially protected aldofuranoses such as (I) is reported. The transformation proceeds via Wittig