183625-23-2Relevant articles and documents
δ-Lactone formation from δ-hydroxy-trans-α,β-unsaturated carboxylic acids accompanied by trans-cis isomerization: synthesis of (-)-tetra-O-acetylosmundalin
Ono, Machiko,Zhao, Xi Ying,Shida, Yuki,Akita, Hiroyuki
, p. 10140 - 10148 (2008/02/13)
(±)-(4,5-anti)-4-Benzyloxy-5-hydroxy-(2E)-hexenoic acid 6 was subjected to δ-lactonization in the presence of 2,4,6-trichlorobenzoyl chloride and pyridine to give the α,β-unsaturated-δ-lactone congener (±)-7 (87% yield) accompanied by trans-cis isomerizat