2717. Cyclocumarol

Nomenclature

CAS number: 518-20-7
3,4-Dihydro-2-methoxy-2-methyl-4-phenyl-2H,5H-pyrano[3,2-c][1]benzopyran-5-one; 2-methyl-2-methoxy-4-phenyl-5-oxodihydropyrano[3,2-c][1]benzopyran; 3,4-(2′-methyl-2′-methoxy-4′-phenyl)dihydropyranocoumarin; 4-hydroxycoumarin anticoagulant no 63; BL-5; Cumopyran (Abbott); Cumopyrin.
C20H18O4; mol wt 322.35.
C 74.52%, H 5.63%, O 19.85%.

Description and references

Prepn: M. Ikawa et al., J. Am. Chem. Soc. 66, 902 (1944); M. A. Stahmann, et al., US 2427579 (1947 to Wisconsin Alumni Res. Found.).

Chemical structure

Properties

Crystals from ethanol, mp 166°. One gram dissolves in 100 ml water. Slightly sol in alcohol, vegetable oil.

Therapeutic Category

Anticoagulant.

Keywords

Anticoagulant