US PATENT SUBCLASS 514 / 283
.~.~.~.~.~ Ring nitrogen in the pentacyclo ring system is shared by five-membered cyclo and six-membered cyclo (e.g., vincamine, etc.)

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514 /   HD   DRUG, BIO-AFFECTING AND BODY TREATING COMPOSITIONS

1  DF  DESIGNATED ORGANIC ACTIVE INGREDIENT CONTAINING (DOAI) {29}
183  DF  .~ Heterocyclic carbon compounds containing a hetero ring having chalcogen (i.e., O,S,Se or Te) or nitrogen as the only ring hetero atoms DOAI {16}
277  DF  .~.~ Hetero ring is six-membered consisting of one nitrogen and five carbon atoms {11}
279  DF  .~.~.~ Polycyclo ring system having the six-membered hetero ring as one of the cyclos {4}
280  DF  .~.~.~.~ Pentacyclo ring system having the six-membered hetero ring as one of the cyclos {2}
283.~.~.~.~.~ Ring nitrogen in the pentacyclo ring system is shared by five-membered cyclo and six-membered cyclo (e.g., vincamine, etc.)

DEFINITION

Classification: 514/283

Ring nitrogen in the pentacyclo ring system is shared by five-membered cyclo and six-membered cyclo (e.g., vincamine, etc.):

(under subclass 280) Subject matter wherein the ring nitrogen of the six-membered hetero ring is additionally a member of a five-membered cyclo in the pentacyclo ring system.