1. Transformed steroids. Part 188. Modes of synthesis of 11β-hydroxysubstituted 16-dehydro 17β-hydroxy and 16α-, 17α-epoxypregnanes based on 17α-ethynyl-11β,17β-dihydroxyandrostanes;Turuta;Khim.-Pharm. Zhurn.,1992
2. Synthesis and 1H and 13C nuclear magnetic resonance of 16-methylene-17α-hydroxypregna-1,4,9(11)-triene-3,20-dione;Cirilo;Steroids,1993
3. Synthesis of 17α,21-dihydroxy-pregna-1,4,9(11)-triene-3,20-dione 21-acetate;Castro;Rev. CENIC Cienc. Quim.,1995
4. L.A. Kominek, H.J. Wolf, Process for preparing 1,2-dehydro steroids, US Patent 4-524-134 (1985).
5. Application of immobilised cells for biotransformations of steroids;Schmauder;J. Basic Microbiol.,1991