An alicyclic ketone in which the carbocyclic ring structure forms part of a terpene skeleton.
| Member | Definition | Role |
|---|
| 11-hydroxysugiol | An abietane diterpenoid that is sugiol in which the hydrogen ortho to the phenolic hydroxy group has been replaced by a hydroxy group. | 11-hydroxysugiol |
| 6-deacetylnimbin | A limonoid that is nimbin in which the acetyloxy group at position 6 is replaced by a hydroxy hroup. It has been isolated from Azadirachta indica. | 6-deacetylnimbin |
| 7-deacetylgedunin | A limonoid that is the 7-deacetyl derivative of gedunin. It has been isolated from Azadirachta indica. | 7-deacetylgedunin |
| albaflavenone | A carbotricyclic compound that is (+)-epi-isozizaene in which the hydrogens at position 5 have been replaced by an oxo group. | albaflavenone |
| azadiradione | A tetracyclic triterpenoid that is 4,4,8-trimethylandrosta-1,14-diene substituted by oxo groups at positions 3 and 16, an acetoxy group at position 7 and a furan-3-yl group at position 17. Isolated from Azadirachta indica, it exhibits antimycobacterial and anti-inflammatory activities. | azadiradione |
| azadirone | A tetracyclic triterpenoid that is 4,4,8-trimethylandrosta-1,14-diene substituted by an oxo group at position 3, an acetoxy group at position 7 and a furan-3-yl group at position 17. Isolated from Azadirachta indica, it exhibits antiplasmodial and antineoplastic activities. | azadirone |
| berkeleydione | A meroterpenoid found in Penicillium rubrum. It has been shown to exhibit inhibitory activity against caspase-1. | berkeleydione |
| berkeleytrione | A meroterpenoid found in Penicillium rubrum and has been shown to exhibit inhibitory activity against caspase-1. | berkeleytrione |
| cycloeucalenone | A pentacyclic triterpenoid that is 4alpha,14-dimethyl-9beta,19-cyclo-5alpha-ergost-24(28)-ene which is substituted by an oxo group at position 3. It has been isolated from several plant species including Quercus variabilis, Ammocharis coranica, Solanum cernuum and Tinospora crispa. | cycloeucalenone |
| epoxyazadiradione | A limonoid that is azadiradione with an epoxy group across positions 14 and 15. Isolated from Azadirachta indica it exhibits insecticidal activitry against mosquitoes. | epoxyazadiradione |
| fenchone, (+-)-isomer | A carbobicyclic compound that is fenchane in which the hydrogens at position 2 are replaced by an oxo group. It is a component of essential oil from fennel (Foeniculum vulgare). | fenchone |
| friedelin | A pentacyclic triterpenoid that is perhydropicene which is substituted by an oxo group at position 3 and by methyl groups at the 4, 4a, 6b, 8a, 11, 11, 12b, and 14a-positions (the 4R,4aS,6aS,6bR,8aR,12aR,12bS,14aS,14bS-enantiomer). It is the major triterpenoid constituent of cork. | friedelin |
| glycyrrhetinic acid | A pentacyclic triterpenoid that is olean-12-ene substituted by a hydroxy group at position 3, an oxo group at position 11 and a carboxy group at position 30. | glycyrrhetinic acid |
| ingenol | A tetracyclic diterpenoid that is 1a,2,5,5a,6,9,10,10a-octahydro-1H-2,8a-methanocyclopenta[a]cyclopropa[e][10]annulen-11-one substituted at positions 5, 5a and 6 by hydroxy groups, positions 1, 1, 7 and 9 by methyl groups, position 4 by a hydroxymethyl group and position 1 by an oxo group (the 1aR,2S,5R,5aR,6S,8aS,9R,10aR diastereomer). | ingenol |
| lactucin | An azulenofuran that is 3-methylidene-3,3a,4,5,9a,9b-hexahydroazuleno[4,5-b]furan-2,7-dione carrying additional hydroxy, methyl and hydroxymethyl substituents at positions 4, 6 and 9 respectively (the 3aR,4S,9aS,9bR-diastereomer). Found in chicory. | lactucin |
| lucidenic acid n | A tetracyclic triterpenoid that is 25,26,27-trinorlanost-8-en-24-oic acid substituted by hydroxy groups at positions 3 and 7 and oxo groups at positions 11 and 15 respectively (the 3beta,5alpha,7beta stereoisomer). Isolated from the fruiting bodies of Ganoderma lucidum, it exhibits cytotoxicity against tumour cells. | lucidenic acid N |
| nimbin | A limonoid found in Azadirachta indica. | nimbin |
| piperitone | A p-menthane monoterpenoid that is cyclohex-2-en-1-one substituted by a methyl group at position 3 and an isopropyl group at position 6. | piperitone |
| shionone | A tetracyclic triterpenoid that is perhydrochrysene which is substituted by methyl groups at positions 1, 4bbeta, 6aalpha, 8beta, 10abeta and 12a positions, by a 4-methylpent-3-enyl group at the 8alpha position, and with an oxo group at position 2. | shionone |
| sugiol | An abietane diterpenoid that is ferruginol in which the methylene group para to the phenolic hydroxy group has been substituted by an oxo group. | sugiol |
| vibsanin b | A vibsane diterpenoid that is (2Z,6E,10E)-cycloundeca-2,6,10-trien-1-one which is substituted at positions 2, 5, 5, 8, 9, and 9 by hydroxymethyl, methyl, 2-methylpent-2-en-5-yl, 3-methylbut-2-enoyloxy, hydroxy, and methyl groups, respectively (the 5S,8R,9R stereoisomer). It has been found to inhibit root growth in rice seedlings (IC50 0.14 mM). | vibsanin B |