1H and 13C NMR characteristics of synthetic derivatives of steroid sapogenins

Steroids: partial synthesis in medicinal chemistry

“…28 The 1 H and 13 C NMR assignments of a number of groups of steroids have been reported including those of some steroidal sapogenins. 29 The circular dichroism curves of molybdenum acetate complexes of steroidal ditertiary 1,2-diols have been examined 30 as models for establishing the absolute stereochemistry of this type of functionality. cyclizations to generate the estrane skeleton have been based on the use of zirconocene 32 and a sequential pericyclic reaction of an ene-diallene (1 / 2).…”