US PATENT SUBCLASS 549 / 350
.~.~.~.~.~.~ Bicyclo ring system having the hetero ring as one of the cyclos


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}
200  DF  .~.~ Oxygen containing hetero ring (e.g., dioxirane, etc.) {16}
346  DF  .~.~.~ The hetero ring has at least seven members {2}
347  DF  .~.~.~.~ Plural ring oxygens in the hetero ring {2}
348  DF  .~.~.~.~.~ Polycyclo ring system having the hetero ring as one of the cyclos {2}
350.~.~.~.~.~.~ Bicyclo ring system having the hetero ring as one of the cyclos {1}
351  DF  .~.~.~.~.~.~.~> Three or more ring oxygens in the bicyclo ring system


DEFINITION

Classification: 549/350

(under subclass 348) Compounds in which the polycyclo ring system consists of exactly two cyclos.

(1) Note. Examples of compounds provided for herein are: [figure] [figure]