Author,Title,Journal,ISSN,Publisher,Date,Volume,Number,Page,URL,URL(DOI) KOJIMA KOICHI and KOYAMA KAZUO and AMEMIYA SHIGEO and SAITO SHINICHI,A stereoselective synthesis of a stable prostacyclin analogue ; dl-3-Oxa-9(O)-methano-.DELTA.6(9.ALPHA.)-prostaglandin I1.,Chemical and Pharmaceutical Bulletin,0009-2363,The Pharmaceutical Society of Japan,1987,35,3,948-956,https://cir.nii.ac.jp/crid/1390282679142214272,https://doi.org/10.1248/cpb.35.948