US PATENT SUBCLASS 552 / 588
.~.~.~.~.~.~ Unsaturation between the 4- and 5-positions (e.g., aldosterones, corticosterones, etc.)

Current as of: June, 1999
Click HD for Main Headings
Click for All Classes

Internet Version by PATENTEC © 1999      Terms of Use


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}
582  DF  .~.~.~ Two oxygens bonded directly to the cyclopentanohydrophenanthrene ring system {5}
586  DF  .~.~.~.~ Oxygen bonded directly at the 3- and 11-position {4}
587  DF  .~.~.~.~.~ Oxygen bonded directly at the 21-position {1}
588.~.~.~.~.~.~ Unsaturation between the 4- and 5-positions (e.g., aldosterones, corticosterones, etc.)

DEFINITION

Classification: 552/588

(under subclass 587) Compounds which contain a double between 4- and 5- positions of the cyclopentanohydrophenanthrene ring system.

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