US PATENT SUBCLASS 549 / 29
.~.~.~ The hetero ring is five-membered


Current as of: June, 1999
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549 /   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) {2}
1  DF  .~.~ Sulfur containing hetero ring (e.g., thiiranes, etc.) {9}
29.~.~.~ The hetero ring is five-membered {13}
30  DF  .~.~.~.~> Plural ring hetero atoms in the hetero ring {4}
41  DF  .~.~.~.~> Polycyclo ring system having the hetero ring as one of the cyclos {3}
59  DF  .~.~.~.~> Additional hetero ring containing {1}
61  DF  .~.~.~.~> Cyano bonded directly to the hetero ring
62  DF  .~.~.~.~> Chalcogen bonded directly to ring carbon of the hetero ring {5}
68  DF  .~.~.~.~> Nitrogen attached directly to the hetero ring by nonionic bonding {1}
70  DF  .~.~.~.~> Having -C(=X)-, wherein X is chalcogen, bonded directly to the hetero ring {3}
74  DF  .~.~.~.~> Nitrogen attached indirectly to the hetero ring by nonionic bonding {1}
78  DF  .~.~.~.~> Chalcogen attached indirectly to the hetero ring by nonionic bonding {1}
80  DF  .~.~.~.~> Unsaturated carbocyclic ring or acyclic carbon to carbon unsaturation containing
81  DF  .~.~.~.~> Halogen attached directly to the hetero ring by nonionic bonding {1}
83  DF  .~.~.~.~> The compound consists of the ring sulfur, carbon, and hydrogen {2}
87  DF  .~.~.~.~> Plural chalcogens double bonded directly to ring sulfur of the hetero ring


DEFINITION

Classification: 549/29

(under subclass 1) Compounds wherein the hetero ring is five-membered.