期刊
TETRAHEDRON
卷 56, 期 47, 页码 9181-9193出版社
PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/S0040-4020(00)00873-5
关键词
licarinediols; 2,3-dihydrobenzofuran lignans ligans; licarin A; synthesis; chiral separations; Mosher esters
The total synthesis of 8,9-licarinediols was selectively carried out from licarin A, previously obtained by oxidative coupling of (E)-isoeugenol. The corresponding enantiomerically pure (+)- and(-)-licarin A ester derivatives were subjected to Sharpless oxidation to yield the asymmetric C-8, C-9 dihydroxylation products, whose absolute configurations were established by means of the CD and NMR spectroscopic analyses of their Mosher ester derivatives. (C) 2000 Elsevier Science Ltd. All rights reserved.
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