US PATENT SUBCLASS 546 / 116
.~.~.~.~.~.~.~ Acyclic chalcogen bonded directly to ring carbon of the bicyclo ring system

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}
112  DF  .~.~.~.~ Bicyclo ring system having the six-membered hetero ring as one of the cyclos {7}
113  DF  .~.~.~.~.~ Plural ring hetero atoms in the bicyclo ring system {6}
115  DF  .~.~.~.~.~.~ Ring oxygen in the bicyclo ring system {1}
116.~.~.~.~.~.~.~ Acyclic chalcogen bonded directly to ring carbon of the bicyclo ring system

DEFINITION

Classification: 546/116

Acyclic chalcogen bonded directly to ring carbon of the bicyclo ring system:

(under subclass 115) Compounds in which acyclic chalcogen (i.e., oxygen, sulfur, selenium, or tellurium) is bonded directly to ring carbon of the bicyclo ring system.

(1) Note. Lactones of pyridine carboxylic acids are provided for in this subclass, e.g.: [figure]