6-Hydroxymellein

6-Hydroxymellein

Names
IUPAC name (3R)-6,8-dihydroxy-3-methyl-3,4-dihydroisochromen-1-one
Other names (R)-6-hydroxymellein (−)-6-Hydroxymellein
Identifiers
CAS Number	70901-60-9
ChemSpider	388784
Jmol interactive 3D	Image
PubChem	439718
InChI InChI=1S/C10H10O4/c1-5-2-6-3-7(11)4-8(12)9(6)10(13)14-5/h3-5,11-12H,2H2,1H3 Key: DHLPMLVSBRRUGA-UHFFFAOYSA-N InChI=1/C10H10O4/c1-5-2-6-3-7(11)4-8(12)9(6)10(13)14-5/h3-5,11-12H,2H2,1H3 Key: DHLPMLVSBRRUGA-UHFFFAOYAI
SMILES O=C1OC(Cc2cc(O)cc(O)c12)C
Properties
Chemical formula	C10H10O4
Molar mass	194.18 g/mol
Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa).
Infobox references

6-Hydroxymellein is a dihydroisocoumarin, a phenolic compound found in carrots.^[1] It has also been isolated in Aspergillus terreus and shows an inhibition of pollen development in Arabidopsis thaliana.^[2]

Biosynthesis

6-Methoxymellein is formed from S-adenosyl methionine and 6-hydroxymellein by the enzyme 6-hydroxymellein O-methyltransferase with secondary production of S-adenosylhomocysteine.^[3]

References

1. Kurosaki, F.; Nishi, A. (1988). "A methyltransferase for synthesis of the phytoalexin 6-methoxymellein in carrot cells". FEBS Letters 227 (2): 183. doi:10.1016/0014-5793(88)80894-9.
2. Shimada, A.; Kusano, M.; Takeuchi, S.; Fujioka, S.; Inokuchi, T.; Kimura, Y. (2002). "Aspterric acid and 6-hydroxymellein, inhibitors of pollen development in Arabidopsis thaliana, produced by Aspergillus terreus". Zeitschrift für Naturforschung C 57 (5–6): 459–464. PMID 12132685.
3. 6-Hydroxymellein biosynthesis pathway on www.biocyc.org