Rishitin

Rishitin is a terpenoid compound, produced by some plants belonging to the Solanum family, including the potato^[1] and tomato.^[2] Rishitin belongs to a heterogeneous group of anti-microbial plant defense compounds termed phytoalexins and is produced upon pathogen attack.^[3] Same as the phytoalexin capsidiol, it belongs to the group of sesquiterpenes and is as such an FPP derivative. Rishitin was named after the potato cultivar Rishiri, where it was first discovered in 1968.^[4]

Rishitin

Names
IUPAC name 15-Nor-4α-eremophila-5(10),11-diene-2α,3β-diol
Systematic IUPAC name (1S,2R,3R,7R)-1-Methyl-7-(prop-1-en-2-yl)-1,2,3,4,5,6,7,8-octahydronaphthalene-2,3-diol
Other names 2,3-Naphthalenediol, 1,2,3,4,5,6,7,8-octahydro-1-methyl-7-(1-methylethenyl)-, (1S,2R,3R,7R)-
Identifiers
CAS Number	18178-54-6
3D model (JSmol)	Interactive image
ChEBI	CHEBI:8870
ChemSpider	97166
KEGG	C09715
PubChem CID	108064
UNII	FQY1K3HR10
CompTox Dashboard (EPA)	DTXSID60171184
InChI InChI=1S/C14H22O2/c1-8(2)10-4-5-11-7-13(15)14(16)9(3)12(11)6-10/h9-10,13-16H,1,4-7H2,2-3H3/t9-,10+,13+,14+/m0/s1 Key: XSCYYIVXGBKTOC-GZZJDILISA-N
SMILES C[C@@H]1[C@H]([C@@H](CC2=C1C[C@@H](CC2)C(=C)C)O)O
Properties
Chemical formula	C14H22O2
Molar mass	222.328 g/mol
Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa). Infobox references

Biosynthesis

The biosynthetic pathway of rishitin has not yet been fully elucidated, and is still an active topic of research. Currently, the enzymes responsible for the synthesis of rishitin have not yet been discovered. Studies using radioisotope labeled compounds, revealed however that solavetivone, 15-hydroxysolavetivone, lubimin and 3-hydroxylubimin are precursors of rishitin. ^[5][6]