The Cyclopentanohydrophenanthrene Ring System Is Part Of A Polycyclo Ring System Having At Least Five Cyclos Patents (Class 540/47)
- The hetero ring contains nitrogen (Class 540/49)
- The hetero ring contains sulfur (Class 540/59)
- The hetero ring is a cyclic anhydride (i.e., containing -C(=X)-O-C(=Y)- as part of the ring, wherein X and Y are chalcogen; e.g., 5,8-maleic anhydride adduct of 5,7,9(11)-pregnatrien-3,20-di-one, etc.) (Class 540/60)
- The hetero ring contains plural oxygens (Class 540/61)
- Two of the cyclos share at least three ring members or a ring carbon is shared by three of the cyclos (e.g., bridged, peri-fused, etc.) (Class 540/62)
- The hetero ring is ortho-fused to the D ring (Class 540/63)
- At least six cyclos in the polycyclo ring system (Class 540/64)
- Nitrogen or acyclic chalcogen bonded directly to the hetero ring (e.g., cyclic carbonates, etc.) (Class 540/65)
- The A ring is a benzene ring (Class 540/66)
- Sulfur or nitrogen attached directly or indirectly to the cyclopentanohydrophenanthrene ring system by acyclic nonionic bonding (Class 540/67)
- Halogen attached indirectly to the cyclopentanohydrophenanthrene ring system by acyclic nonionic bonding (Class 540/68)
- Halogen bonded directly to the cyclopentanohydrophenanthrene ring system (Class 540/69)
- Oxygen attached directly to the B ring or indirectly to the A or B ring by acyclic nonionic bonding (Class 540/71)
- The hetero ring is a lactone (i.e., containing -C(=X)-O- as part of the ring, wherein X is chalcogen) (Class 540/72)
- The hetero ring is three-membered consisting of one oxygen and two carbons (e.g., oxirane, etc.) (Class 540/76)
- The polycyclo ring system contains plural oxirane rings (Class 540/77)
- The hetero ring shares the 1,2-positions of the cyclopentanohydrophenanthrene ring system (Class 540/78)
- The hetero ring shares the 4,5-positions of the cyclopentanohydrophenanthrene ring system (Class 540/79)
- The hetero ring shares the 5,6-positions of the cyclopentanohydrophenanthrene ring system (Class 540/80)
- The hetero ring shares the 6,7-positions of the cyclopentanohydrophenanthrene ring system (Class 540/81)
- The hetero ring shares the 11,12-positions of the cyclopentanohydrophenanthrene ring system (Class 540/82)
- The hetero ring shares the 14,15-positions of the cyclopentanohydrophenanthrene ring system (Class 540/83)
- The hetero ring shares the 16,17-positions of the cyclopentanohydrophenanthrene ring system (Class 540/84)
- The hetero ring shares the 9,11-positions of the cyclopentanohydrophenanthrene ring system (Class 540/87)
- The hetero ring shares at least three ring members with one other cyclo of the polycyclo ring system (i.e., bridged) (Class 540/90)
- Bridge consisting of oxygen and carbon between the 6- and 10-positions of the cyclopentanohydrophenanthrene ring system (e.g., 6,19-oxido steroids, etc.) (Class 540/91)
- Bridge consisting of oxygen and carbon between the 11- and 13-positions of the cyclopentanohydrophenanthrene ring system (e.g., 11,18-oxido steroids, etc.) (Class 540/92)
- The hetero ring shares a ring carbon with two other cyclos of the polycyclo ring system (e.g., peri-fused, etc.) (Class 540/93)