USRE29163EExpiredUtility

1,2,3,4,10,19-Hexanor-9-oxo-5,9-seco-25D-spirostan-5-oic acid

24
Priority: Mar 3, 1969Filed: Mar 9, 1976Granted: Mar 29, 1977
Est. expiryMar 3, 1989(expired)· nominal 20-yr term from priority
C07D 493/10C07J 75/00
24
PatentIndex Score
2
Cited by
2
References
1
Claims

Abstract

The spirostan derivative 1,2,3,4,10,19-hexanor-.[.5.]. .Iadd.9.Iaddend.-oxo-5,9-seco-25D-spirostan-5-oic acid is obtained by the microbiological degradation of diosgenin utilizing Proactinomyces restrictus Turfitt CBS 157.45 or enzymes derived therefrom. The aforesaid spirostan derivative is useful as an intermediate in the synthesis of medicinally valuable 9β,10α-steroids and norsteroids.

Claims

exact text as granted — not AI-modified
We claim: 
     
       1. 1,2,3,4,10,19-hexanor- .[.5.]..Iadd.9.Iaddend.-oxo-5,9-seco-25D-spirostan-5-oic acid.

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