Cyclopentanohydrophenanthrene Ring System Containing Patents (Class 540/2)
- Plural spiro atoms (Class 540/7)
- The cyclopentanohydrophenanthrene ring system is part of a polycyclo ring system having at least five cyclos (Class 540/8)
- The cyclopentanohydrophenanthrene ring system shares spiro atoms with two hetero rings, each of which contains two oxygens (e.g., 3,17-bis-ketals, etc.) (Class 540/10)
- The cyclopentanohydrophenanthrene ring system shares a spiro atom with a lactone ring (i.e., -C(=X)-O- is part of the ring, wherein X is chalcogen) (Class 540/11)
- Plural oxygens in both rings which share a spiro atom (e.g., 17,20;20,21 bismethylenedioxy-pregnanes, etc.) (Class 540/12)
- The cyclopentanohydrophenanthrene ring system is part of a polycyclo ring system having at least five cyclos (Class 540/15)
- Hetero ring is one of the cyclos of the polycyclo ring system (Class 540/16)
- The hetero ring is five-membered, consisting of one oxygen and four carbons, and shares the spiro atom with a six-membered oxygen containing hetero ring (e.g., sapogenins, etc.) (Class 540/17)
- Purification or recovery (Class 540/18)
- Chalcogen bonded directly at the 12-position of the cyclopentanohydrophenanthrene ring system (e.g., hecogenin, etc.) (Class 540/19)
- Chalcogen bonded directly at the 11-position of the cyclopentanohydrophenanthrene ring system (Class 540/20)
- Halogen, cyano, nitrogen or sulfur bonded directly to the cyclopentanohydrophenanthrene ring system (Class 540/22)
- The spiro atom is the 17-position carbon of the cyclopentanohydrophenanthrene ring system (Class 540/23)
- The hetero ring shares the 11,12,13-positions of the cyclopentanohydrophenanthrene ring system (i.e., bridged; e.g., 11,18-oxido steroids, etc.) (Class 540/24)
- The hetero ring is three-membered consisting of one oxygen and two carbons (e.g., oxirane, etc.) (Class 540/25)
- The hetero ring contains two chalcogens which are bonded directly at the 16 and 17-positions of the cyclopentanohydrophenanthrene ring system (Class 540/27)
- The spiro includes the cyclopentanohydrophenanthrene ring system and a hetero ring (Class 540/28)
- Nitrogen in the spiro hetero ring (Class 540/29)
- Sulfur in the spiro hetero ring (Class 540/30)
- Plural oxygens in the spiro hetero ring (Class 540/31)
- The A ring is a benzene ring (Class 540/32)
- Chalcogen bonded directly to the spiro hetero ring (Class 540/33)
- The spiro hetero ring shares the 3-position carbon of the cyclopentanohydrophenanthrene ring system (Class 540/34)
- Halogen bonded directly to the cyclopentanohydrophenanthrene ring system (Class 540/35)
- Nitrogen attached directly or indirectly to the cyclopentanohydrophenanthrene ring system by nonionic bonding (Class 540/36)
- Plural cyclic ketal rings containing (e.g., 3,20-bis-ketals, etc.) (Class 540/37)
- Chalcogen bonded directly at the 11-position of the cyclopentanohydrophenanthrene ring system (Class 540/38)
- The cyclopentanohydrophenanthrene ring system is fully saturated (Class 540/39)
- Carbon chain having carbon-to-carbon unsaturation bonded directly at the 17 position of the cyclopentanohydrophenanthrene ring system (Class 540/40)
- The spiro hetero ring contains -C(=X)-O-, wherein X is chalcogen, as part of the ring (e.g., spiro-lactones, etc.) (Class 540/41)
- Sulfur bonded directly to the cyclopentanohydrophenanthrene ring system (Class 540/42)
- Chalcogen bonded directly at the 11-position of the cyclopentanohydrophenanthrene ring system (Class 540/43)
- Chalcogen, halogen, or nitrogen attached indirectly to the cyclopentanohydrophenanthrene ring system by acyclic nonionic bonding (Class 540/44)
- The spiro hetero ring is four-membered consisting of one oxygen and three carbons (Class 540/45)
- The spiro hetero ring is three-membered consisting of one oxygen and two carbons (e.g., oxirane, etc.) (Class 540/46)
- Hetero ring is one of the cyclos of the polycyclo ring system (Class 540/48)
- 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)
- The hetero ring contains nitrogen (Class 540/95)
- The hetero ring contains plural chalcogens (Class 540/100)
- The hetero ring contains -C(=X)-O-, wherein X is chalcogen, as part of the ring (e.g., lactones, etc.) (Class 540/102)
- Additional chalcogen, cyano, or -C(=X)-, wherein X is chalcogen, bonded directly to the hetero ring (Class 540/103)
- Nitrogen or sulfur attached directly or indirectly to the cyclopentanohydrophenanthrene ring system by nonionic bonding (Class 540/104)
- Chalcogen bonded directly at the 14-position of the cyclopentanohydrophenanthrene ring system or double bond in the D ring (e.g., cardenolides, etc.) (Class 540/105)
- The hetero ring is five-membered and has plural hetero atoms (Class 540/108)
- The hetero ring is in the 17-position substituent of the cyclopentanohydrophenanthrene ring system (Class 540/109)
- The hetero ring is bonded directly to a -C(=X)- group, wherein X is chalcogen (Class 540/110)
- Having -C(=X)-, wherein X is chalcogen, bonded directly at the 17-position of the cyclopentanohydrophenanthrene ring system (Class 540/111)
- Chalcogen or nitrogen in chain between the hetero ring and the cyclopentanohydrophenanthrene ring system (Class 540/112)
- Chalcogen in chain between the hetero ring and the cyclopentanohydrophenanthrene ring system (Class 540/113)
- The hetero ring contains -C(=X)-O-, wherein X is chalcogen, as part of the ring (e.g., lactones, etc.) (Class 540/115)
- Additional hetero atom in the oxygen containing hetero ring (Class 540/116)
- The A ring is a benzene ring (Class 540/117)
- The hetero ring is bonded directly to chalcogen which is bonded directly to the cyclopentanohydrophenanthrene ring system (Class 540/118)