ChemInform Abstract: Annulation Approach to Doubly Linked (A‐Type) Oligocatechins: Syntheses of (+)‐Procyanidin A2 and (+)‐Cinnamtannin B1. Issue 10 (March 2015)

• Record Type: Journal Article
• Authors: Ito, Yuji; Ohmori, Ken; Suzuki, Keisuke
• Is Part Of: ChemInform. Volume 46:Issue 10(2015)
• Page Start: no
• Page End: no
• Publication Date: 2015-03
• Subjects: Chemistry -- Abstracts -- Periodicals; 540.5
• DOI: 10.1002/chin.201510279
• Languages: English
• ISSNs: 0931-7597

Abstract

<abstract abstract-type="main" xml:lang="en"> <title>Abstract</title> <p>The first stereoselective and high‐yielding syntheses of (+)‐procyanidin A₂ (I) and (+)‐cinnamtannin B₁ (II) are achieved by exploiting dual activation of the electrophilic flavan units at C‐2 and C‐4, thus allowing catechin annulation with nucleophilic flavan units in a regio‐ and stereoselective manner.</p> </abstract>