Author,Title,Journal,ISSN,Publisher,Date,Volume,Number,Page,URL,URL(DOI)
S. A. Szpilfogelw and J. van Der Burg and C. M. Siegmann and D. A. van Dorp,"Total synthesis in the steroid series. I. An tricyclic intermediate to 18‐oxygenated steroids. d,l‐Δ<sup>8a</sup>‐4bβ‐Methyl‐2β‐formyl‐2α‐(3′‐oxopropyl)‐7‐ethylenedioxy‐4aα,10aβ‐dodecahydrophenanthrene‐4β‐ol‐l‐one)",Recueil des Travaux Chimiques des Pays-Bas,0165-0513,Wiley,1956-01,75,9,1043-1052,https://cir.nii.ac.jp/crid/1363388845551458176,https://doi.org/10.1002/recl.19560750906