2.2 Flavan-4-ols/flavan-3, 4-diols 3 A-Type proanthocyanidins 4 B-Type proanthocyanidins
4.1 Procyanidins (3, 5, 7, 3A, 4A-pentahydroxylation) 4.2 Prodelphinidins (3, 5, 7, 3A, 4, A5A …

Polyphenolic compounds have recently attracted considerable interest in the field of
nutrition, health and medicine. This is the result of the growing body of evidence suggesting …

The state-of-the-art in stereoselective synthesis!. Thoroughly revised and updated, this
enlarged second edition offers a plethora of valuable information on methods and reagents …

The study of flavonoid chemistry has emerged, like that of most natural products, from the
search for new compounds with useful physiological properties. Semisynthetic endeavors of …

Rhodium-catalyzed decomposition of α-vinyldiazoesters in the presence of silanes,
alcohols, ethers, amines, and thiols have been shown to produce the corresponding α-silyl …

The oxidation of alkenes to vicinal diols using osmium tetroxide is one of the most selective
and reliable transformations in organic synthesis. The reaction stereospecifically produces a …

In this work, a NBS-mediated 2, 4-dibromohydration of enynes is described. It has been
proved that ortho-acetamide participated in this 2, 4-dibromohydration process. Mechanism …

A wide variety of 3-alkyne-1, 2-diols have been found to undergo exceptionally clean 5-endo-
dig cyclisations followed by dehydration at ambient temperature to give the corresponding …

A new catalytic method for the synthesis of α‐hydroxyallenes is described. Efficient SN2′
substitution of propargylic dioxolanones has been achieved with a copper (I)/P (OBu) 3 …

An allenic Pauson− Khand reaction has been employed in the preparation of (±)-
hydroxymethylacylfulvene (HMAF), an anticancer agent that is currently in Phase II clinical …