US PATENT SUBCLASS 514 / 178
.~.~.~ Oxygen single bonded to a ring carbon of the cyclopentanohydrophenanthrene ring system

Current as of: June, 1999
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514 /   HD   DRUG, BIO-AFFECTING AND BODY TREATING COMPOSITIONS

1  DF  DESIGNATED ORGANIC ACTIVE INGREDIENT CONTAINING (DOAI) {29}
169  DF  .~ Cyclopentanohydrophenanthrene ring system DOAI {5}
177  DF  .~.~ Oxygen double bonded to a ring carbon of the cyclopentanohydrophenanthrene ring system {1}
178.~.~.~ Oxygen single bonded to a ring carbon of the cyclopentanohydrophenanthrene ring system {2}
179  DF  .~.~.~.~> Modified C-ring (except methyl in 13-position) (e.g., double bond containing, substituted, etc.) {1}
181  DF  .~.~.~.~> 21-position substituted

DEFINITION

Classification: 514/178

Oxygen single bonded to a ring carbon of the cyclopentanohydrophenanthrene ring system:

(under subclass 177) Subject matter wherein one nuclear carbon of the cyclopentanohydrophenanthrene nucleus is bonded to an oxygen through a double bond and wherein another nuclear carbon atom of said cyclopentanohydrophenanthrene is bonded to at least one other oxygen through a single bond as, e.g., ether, hydroxy or alcoholate, etc.