US PATENT SUBCLASS 540 / 310
.~.~.~.~.~.~.~ Having -C(=X)-, wherein X is chalcogen, bonded directly at the 3-position of the bicyclo ring system

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

*  DD  ORGANIC COMPOUNDS (Class 532, Subclass 1) {1}
1  DF  .~ HETEROCYCLIC CARBON COMPOUNDS CONTAINING A HETERO RING HAVING CHALCOGEN (I.E., OXYGEN, SULFUR, SELENIUM OR TELLURIUM) OR NITROGEN AS THE ONLY RING HETERO ATOMS {6}
200  DF  .~.~ Hetero ring is four-membered containing nitrogen and having chalcogen double bonded directly to a ring carbon which is adjacent to the ring nitrogen {7}
203  DF  .~.~.~ Polycyclo ring system containing the hetero ring as one of the cyclos {4}
302  DF  .~.~.~.~ The ring nitrogen is shared by a five-membered ring {2}
303  DF  .~.~.~.~.~ The five-membered ring contains an additional hetero atom {2}
304  DF  .~.~.~.~.~.~ 1-thia-4-aza-bicyclo(3.2.0)hep-tane (including unsaturated; e.g., penam, etc.) {6}
310.~.~.~.~.~.~.~ Having -C(=X)-, wherein X is chalcogen, bonded directly at the 3-position of the bicyclo ring system {2}
311  DF  .~.~.~.~.~.~.~>.~ Nitrogen or hydrogen bonded directly to the -C(=X)- group
312  DF  .~.~.~.~.~.~.~>.~ Nitrogen bonded directly at the 6-position of the bicyclo ring system {3}

DEFINITION

Classification: 540/310

(under subclass 304) Compounds in which - C -, wherein X is chalogen (i.e., oxygen, sulfur, selenium or tellurium), is bonded directly at the 3-position of the bicyclo ring system.

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