N. Kato et al., TOTAL SYNTHESIS OF OPTICALLY-ACTIVE SORDARICIN METHYL-ESTER AND ITS DELTA(2)-DERIVATIVE, Journal of the Chemical Society, Chemical Communications, (12), 1993, pp. 1002-1004
Optically active sordaricin methyl ester and its DELTA2-derivative hav
e been synthesised via intramolecular Diels-Alder reaction of appropri
ate precursors derived from dimeric condensates of iridoid synthons fo
r the first time.