US PATENT SUBCLASS 560 / 257
.~.~.~.~.~ Nor- or homo- cyclopentanohydrophenanthrenes

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

*  DD  ORGANIC COMPOUNDS (Class 532, Subclass 1) {17}
1  DF  .~ Carboxylic acid esters {14}
129  DF  .~.~ Acyclic acid moiety {9}
231  DD  .~.~.~ Unsubstituted acids of the acetic series {16}
256  DF  .~.~.~.~ Polycyclo-alicyclic ring system in alcohol moiety {1}
257.~.~.~.~.~ Nor- or homo- cyclopentanohydrophenanthrenes {1}
258  DF  .~.~.~.~.~.~> Nor-A ring

DEFINITION

Classification: 560/257

Nor- or homo-cyclopentanohydrophenan-threnes:

(under subclass 256) Compounds wherein the alcohol moiety contains the structure, illustrated below, wherein is 0-2, but all n's may not be equal to 1 at the same time. [figure]

(1) Note. For compounds where all n's are equal to 1, see Class 552, subclasses 502+.

(2) Note. This subclass contains, for example: [figure] [figure]