US PATENT SUBCLASS 546 / 188
.~.~.~.~.~ Chalcogen attached directly to a ring carbon of a piperidine ring by nonionic bonding

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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}
184  DF  .~.~.~ Piperidines {8}
186  DF  .~.~.~.~ Plural piperidine rings {5}
188.~.~.~.~.~ Chalcogen attached directly to a ring carbon of a piperidine ring by nonionic bonding

DEFINITION

Classification: 546/188

Chalcogen attached directly to a ring carbon of a piperidine ring by nonionic bonding:

(under subclass 186) Compounds in which chalcogen (i.e., oxygen, sulfur, selenium, or tellurium) is attached directly to a piperidine ring by nonionic bonding.

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

SEE OR SEARCH THIS CLASS, SUBCLASS:

261, for tautomers of chalcogen double bonded directly to

piperidine (i.e., chalcogen attached directly to pyridine or partially hydrogenated pyridine), e.g.,