Synthesis of Pregn-17/20/-en-21-oic Acid Derivatives. The Wittig-Horner Reaction on Steroidal 17-Ketones

References

• Wicha , J. and Bal , K. 1975 . J. C. S. Chem. Comm. , : 968
   Google Scholar
• Reichstein , T. , Müller , H. , Meystre , C. and Sutter , M. 1939 . Helv. Chim. Acta , 22 : 741 For an examples of two-step syntheses of these compounds see: a.
   Google Scholar
• Magrath , D. , Morris , D. S. , Petrow , V. and Royer , R. 1950 . J. Chem. Soc. , : 2393
   Web of Science ®Google Scholar
• Marker , R. E. , Crooks , H. M. , Jones , E. M. and Shabica , A. C. 1942 . J. Am. Chem. Soc. , 64 : 1276
   Google Scholar
• Bose , A. K. and Dahill , R. T. 1963 . Tetrahedron Letters , : 959 J. Org. Chem., 30, 505/1965
   Web of Science ®Google Scholar
• Godsby , B. , Leeming , M. R. G. , Greenspan , G. and Smith , H. 1968 . J. Chem. Soc./C/ , : 2647 for example see
   Google Scholar
• Bergmann , E. D. and Solomonovici , A. 1976 . Steroids , 27 : 431
   PubMed Web of Science ®Google Scholar
• Butenandt , A. and Grosse , W. 1939 . Chem. Ber. , 69 : 2777
   Google Scholar
• Courrier , R. , Velluz , L. , Alloiteau , J. J. and Rousseau , G. 1945 . Compt. rend. sec. biol. , 139 : 128
   Google Scholar
• Romo , J. and Romo de Vivar , A. 1957 . J. Am. Chem. Soc. , 79 : 1118
   Web of Science ®Google Scholar
• House , H. O. , Jones , V. K. and Frank , G. A. 1964 . J. Org. Chem. , 29 : 3327
   Web of Science ®Google Scholar
• Hogg , J. A. , Beal , P. F. , Nathan , A. H. , Lincoln , F. H. , Schneider , W. P. , Magerlein , B. J. , Hanze , A. R. and Jackson , R. W. 1955 . J. Am. Chem. Soc. , 77 : 4436
   Web of Science ®Google Scholar
• Heusser , H. , Eichenberger , K. and Plattner , Pl. A. 1950 . Helv. Chim. Acta. , 33 : 1088
   Web of Science ®Google Scholar
• Plattner , Pl. A. and Schreck , W. 1939 . Helv. Chim. Acta. , 22 : 1178
   Google Scholar