US PATENT SUBCLASS 435 / 54
.~.~ Acting on D-ring

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

Internet Version by PATENTEC © 1999      Terms of Use


435 /   HD   CHEMISTRY: MOLECULAR BIOLOGY AND MICROBIOLOGY

41  DF  MICRO-ORGANISM, TISSUE CELL CULTURE OR ENZYME USING PROCESS TO SYNTHESIZE A DESIRED CHEMICAL COMPOUND OR COMPOSITION {26}
52  DF  .~ Preparing compound containing a cyclopentanohydrophenanthrene nucleus; nor-, homo-, or D-ring lactone derivatives thereof {4}
54.~.~ Acting on D-ring {2}
55  DF  .~.~.~> Acting at 17-position {1}
57  DF  .~.~.~> Hydroxylating at 16-position

DEFINITION

Classification: 435/54

Acting on D-ring:

(under subclass 52) Processes wherein the product synthesized is formed by biochemical transformation within the D-ring.

(1) Note. The hetero ring may be fused or bridged with the cyclopentanophenanthrene ring system.