| abstract |
Steroid compounds having various oxygen substitution on the steroid nucleusnare disclosed. A specific functionality present on many of the steroidncompounds is oxygen substitution at both of positions 6 and 7. Thus, certainnsteroids have oxygen substitution at C6 and C7, and some have specificnstereochemistries such as 6α and 7β oxygen substitution, and an alphanhydrogen at the 5 position in addition to having 6α and 7β oxygen substitution.nSteroids having 3,4-epoxy functionality are also disclosed. In addition, steroidsnhaving C17 pyran and δ-lactone functionality, with oxygen substitution at C6nand C7, or at C15, of the steroid nucleus, are disclosed. |