US PATENT SUBCLASS 546 / 46
.~.~.~.~.~.~.~ A single chalcogen is bonded directly to ring carbon of the pentacyclo ring system (e.g., desoxy morphine, etc.)

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

*  DD  ORGANIC COMPOUNDS (Class 532, Subclass 1) {1}
*  DD  .~ HETEROCYCLIC CARBON COMPOUNDS CONTAINING A HETERO RING HAVING CHALCOGEN (I.E., OXYGEN, SULFUR, SELENIUM, OR TELLURIUM) OR NITROGEN AS THE ONLY RING HETERO ATOMS (Class 540, subclass 1) {1}
1  DF  .~.~ Hetero ring is six-membered consisting of one nitrogen and five carbons {24}
26  DF  .~.~.~ Polycyclo ring system having the six-membered hetero ring as one of the cyclos {9}
42  DF  .~.~.~.~ Pentacyclo ring system having the six-membered hetero ring as one of the cyclos {3}
43  DF  .~.~.~.~.~ Two of the cyclos share at least three ring members (i.e., bridged) {1}
44  DF  .~.~.~.~.~.~ One of the five cyclos is five-membered and includes ring chalcogen (e.g., codeine, morphine, etc.) {2}
46.~.~.~.~.~.~.~ A single chalcogen is bonded directly to ring carbon of the pentacyclo ring system (e.g., desoxy morphine, etc.)

DEFINITION

Classification: 546/46

A Single chalcogen is bonded directly to ring carbon of the pentacyclo ring system (e.g., desoxy morphine, etc):

(under subclass 44) Compounds wherein exactly one chalcogen atom (i.e., oxygen, sulfur, selenium, or tellurium) is bonded directly to a ring carbon of the pentacyclo ring system.

(1) Note. This subclass provides for those compounds which contain only one chalcogen bonded directly to a ring carbon of the pentacyclo ring system, e.g., the desoxy morphines, etc.

(2) Note. An example of such a compound is: [figure]