US PATENT SUBCLASS 552 / 559
.~.~.~ Three or more oxygens bonded directly to the cyclopentanohydrophenanthrene ring system

Current as of: June, 1999
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552 /   HD   ORGANIC COMPOUNDS -- PART OF THE CLASS 532-570 SERIES

*  DD  ORGANIC COMPOUNDS (Class 532, subclass 1) {11}
502  DF  .~ Cyclopentanohydrophenanthrene ring system containing {21}
557  DF  .~.~ Carbon bonded directly at the 17-beta-position of the cyclopentanohydrophenanthrene ring system is a member of an acyclic chain of two uninterrupted carbons (e.g., pregnanes, etc.) {4}
559.~.~.~ Three or more oxygens bonded directly to the cyclopentanohydrophenanthrene ring system {7}
560  DF  .~.~.~.~> Oxygen bonded directly at the 1-, 2- or 4-position
561  DF  .~.~.~.~> Oxygen bonded directly at the 6-position
562  DF  .~.~.~.~> Oxygen bonded directly at the 7-, 8- or 9-position
563  DF  .~.~.~.~> Oxygen bonded directly at the 14- or 15-position
564  DF  .~.~.~.~> Oxygen bonded directly at the 16-position {2}
567  DF  .~.~.~.~> Halogen bonded directly at the 2- or 4-position (e.g., 4-bromocortisones, etc.) {1}
569  DF  .~.~.~.~> Oxygen bonded directly at the 3-, 11-, and 17-positions {3}

DEFINITION

Classification: 552/559

(under subclass 557) Compounds wherein three or more oxygens are bonded directly to the cyclopentanohydrophenanthrene ring system.

(1) Note. An example of a compound provided for herein is: [figure]