Stereoselective synthesis and structural variations of ethyl analogues of galbanum macrolides
作者:Birgit Bollbuck、Werner Tochtermann
DOI:10.1016/s0040-4020(99)00363-4
日期:1999.6
Both enantiomers of 13-pentadecanolide and 15-heptadecanolide, higher analogues of galbanum macrolides, were prepared via ring enlargement of cyclodecanone and cyclododecanone, respectively. Conversion of the intermediate oxo lactones to methylenated ethyl galbanum macrolides by Wittig olefination shifted the olfactory properties dramatically. (C) 1999 Elsevier Science Ltd. All rights reserved.
Novel chiral building blocks derived from Baker's yeast reduction products: Synthesis and odour of mono- and bicyclic macrolides
作者:Birgit Bollbuck、Werner Tochtermann
DOI:10.1016/s0040-4020(99)00362-2
日期:1999.6
A number of bicyclic macrolides with two stereogenic centres formally derived from ω-cycloalkyl fatty acids were synthesised by ring enlargement of cycloalkanones with novel chiralbuildingblocks, easily available from yeast reduction products of β-keto esters. A comparison with structurally related monocyclic macrolides revealed surprising effects of structural variations on the olfactory properties