US PATENT SUBCLASS 548 / 530
.~.~.~ Having -C(=X)-, wherein X is chalcogen, bonded directly to the five membered hetero ring (e.g., pyrrole carbonyl halides, pyrrole carboxaldehyde, etc.)

Current as of: June, 1999
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548 /   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) {4}
400  DF  .~.~ Hetero ring is five-membered consisting of one nitrogen and four carbons (e.g., halopyrrolidines, etc.) {20}
530.~.~.~ Having -C(=X)-, wherein X is chalcogen, bonded directly to the five membered hetero ring (e.g., pyrrole carbonyl halides, pyrrole carboxaldehyde, etc.) {4}
531  DF  .~.~.~.~> The -C(=X)- is part of a -C(=X)X- group, wherein the X's are the same or diverse chalcogens (e.g., pyrrole-3-carboxylic acid, etc.) {2}
537  DF  .~.~.~.~> Acyclic nitrogen bonded directly to the -C(=X)- (e.g., 4,5-dihalopyrrole -2 carboxamides, etc.) {1}
539  DF  .~.~.~.~> Carbocyclic ring bonded directly to the -C(=X)- (e.g., 3-benzoyl pyrrolidine, etc.)
540  DF  .~.~.~.~> Acyclic carbon bonded directly to the -C(=X)- (e.g., N-oleoylpyrrolidine, etc.)

DEFINITION

Classification: 548/530

(under subclass 400) Compounds wherein a group, in which X is chalcogen (i.e., oxygen, sulfur, selenium, or tellurium), is bonded directly to the five-membered hetero ring.

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