Author,Title,Journal,ISSN,Publisher,Date,Volume,Number,Page,URL,URL(DOI)
Takeda Kenichi and Osaka Hiroshi and Maezono Norihide,"On Steroidal Sapogenins. II. Synthesis of Some 7-Oxygenated 5β, 25D-Spirostanes.",Chemical and Pharmaceutical Bulletin,00092363,The Pharmaceutical Society of Japan,1961,9,5,383-387,https://cir.nii.ac.jp/crid/1390001204176779904,https://doi.org/10.1248/cpb.9.383