US PATENT SUBCLASS 548 / 497
.~.~.~.~.~.~.~.~.~ Processes


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}
416  DF  .~.~.~ Polycyclo ring system having the five-membered hetero ring as one of the cyclos {5}
452  DF  .~.~.~.~ Bicyclo ring system having the five-membered hetero ring as one of the cyclos (e.g., octahydroindoles, etc.) {7}
469  DF  .~.~.~.~.~ The bicyclo ring system consists of the five-membered hetero ring and a benzene ring (e.g., indole, etc.) {10}
494  DF  .~.~.~.~.~.~ Having -C(=X)-, wherein X is chalcogen, attached indirectly to ring carbon of the five-membered hetero ring by an acyclic carbon or acyclic carbon chain (e.g., indole-3-acetic acid, etc.) {3}
495  DF  .~.~.~.~.~.~.~ Acyclic nitrogen bonded directly to the acyclic carbon or acyclic carbon chain {1}
496  DF  .~.~.~.~.~.~.~.~ The acyclic carbon or acyclic carbon chain is further unsubstituted or alkyl substituted only (e.g., tryptophane, etc.) {1}
497.~.~.~.~.~.~.~.~.~ Processes {2}
498  DF  .~.~.~.~.~.~.~>.~.~.~ Racemization or optical resolution
499  DF  .~.~.~.~.~.~.~>.~.~.~ Preparing from hydantoins or proteins


DEFINITION

Classification: 548/497

(under subclass 496) Processes for preparing the compound, or for separating the compound from impurities or from the reaction mixture.