SCHEDULED MAINTENANCE
In the preparation of 7-methyl-19-nor-steroids, a new method for the synthesis of key intermediates (10), which involves alkylation of the CD ring fragment (4) and subsequent hydrogenation, cyclization, and hydrogenation is described.
Z. Cai, Y. Ni, J. Sun, X. Yu and Y. Wang, J. Chem. Soc., Chem. Commun., 1985, 1277 DOI: 10.1039/C39850001277
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