Cam. Fraga et al., DESIGN AND SYNTHESIS OF A NEW 4-OXA-8-OMEGA-11-DEOXY-5,6-DIHYDROPROSTACYCLIN ANALOG, Chemical and Pharmaceutical Bulletin, 44(11), 1996, pp. 2157-2161
(+/-)-5-[5 )-1)-2-oxabicyclo[3.3.0]octan-3-yl]-4-oxapentanoic acid (+/
-)-(1a,b), designed as a chemically and biologically stable prostacycl
in analogue, was synthesized in 15% yield overall, via the droxymethyl
-5-carbethoxy-2-oxabicyclo[3.3.0]octane (4) as the key intermediate.