Classification Term: 1659
Stemarane diterpenoids (ontology term: CHEMONTID:0003400)
Diterpenoids with a structure characterized by a stemarane skeleton. Some characteristics include the bicyclic system C/D that is constituted by a bicyclo[3.2.1]octane fused to the bicyclic A/B system in a different fashion with respect to other tetracyclic diterpenes possessing the bicyclo[3.2.1]octane system. Moreover, the two contiguous quaternary carbon atoms, C(9) and C(10), are present, the former being a spirocyclic atom. Oxygenation can happen at positions C(2), C(7), C(13), C(17), C(18), and C(19)." [http:padis.uniroma1.it/bitstream/10805/2345/8/Tesi_PhD%20corretto.pdf]
found 2 associated metabolites at family metabolite taxonomy ontology rank level.
Ancestor: Villanovane, atisane, trachylobane or helvifulvane diterpenoids
Child Taxonomies: There is no child term of current ontology term.
Stemar-13-ene
Stemar-13-ene is a member of the class of compounds known as stemarane diterpenoids. Stemarane diterpenoids are diterpenoids with a structure characterized by a stemarane skeleton. Some characteristics include the bicyclic system C/D that is constituted by a bicyclo[3.2.1]octane fused to the bicyclic A/B system in a different fashion with respect to other tetracyclic diterpenes possessing the bicyclo[3.2.1]octane system. Moreover, the two contiguous quaternary carbon atoms, C(9) and C(10), are present, the former being a spirocyclic atom. Oxygenation can happen at positions C(2), C(7), C(13), C(17), C(18), and C(19). Thus, stemar-13-ene is considered to be an isoprenoid lipid molecule. Stemar-13-ene can be found in rice, which makes stemar-13-ene a potential biomarker for the consumption of this food product.
Oryzalexin S
Oryzalexin S is found in cereals and cereal products. Oryzalexin S is a constituent of rice plants infected with Pyricularia oryzae. Constituent of rice plants infected with Pyricularia oryzae. Oryzalexin S is found in cereals and cereal products and rice.