US PATENT SUBCLASS 546 / 277.4
.~.~.~.~.~.~ Bicyclo ring system which is indole (including hydrogenated)

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}
268.1  DF  .~.~.~ Additional hetero ring containing {4}
276.4  DF  .~.~.~.~ The additional hetero ring is five-membered consisting of one nitrogen and four carbons {4}
276.7  DF  .~.~.~.~.~ Polycyclo ring system having the five-membered hetero ring as one of the cyclos {2}
277.4.~.~.~.~.~.~ Bicyclo ring system which is indole (including hydrogenated) {2}
277.7  DF  .~.~.~.~.~.~.~> Chalcogen attached directly to the five-membered hetero ring by nonionic bonding
278.1  DF  .~.~.~.~.~.~.~> Having -C(=X)-, wherein X is chalcogen, bonded directly to the five- membered hetero ring

DEFINITION

Classification: 546/277.4

Bicyclo ring system which is indole (including hydrogenated):

(under subclass 276.7) Compounds wherein the polycyclo ring system is bicyclo and consists of the following basic structure in which the bonds between the ring members may be single or double bonds: [figure]