1487. Bunazosin

Nomenclature

CAS number: 80755-51-7
1-(4-Amino-6,7-dimethoxy-2-quinazolinyl)hexahydro-4-(1-oxobutyl)-1H-1,4-diazepine; 1-(4-amino-6,7-dimethoxy-2-quinazolinyl)-4-butyrylhexahydro-1H-1,4-diazepine; 4-amino-6,7-dimethoxy-2-[4-(n-butyryl)homopiperazin-1-yl]quinazoline; DDQ.
C19H27N5O3; mol wt 373.45.
C 61.11%, H 7.29%, N 18.75%, O 12.85%.

Description and references

Aminoquinazoline derivative with potent hypotensive properties. Prepn: T. Takahashi, H. Sugimoto, BE 806626; eidem, US 3920636 (1974, 1975 to Eisai); alternative prepn: eidem, JP Kokai 75 140474 (1975 to Eisai), C.A. 85, 46769r (1976). In vitro and in vivo studies of adrenergic blocking action and antihypertensive properties: T. Shoji et al., Jpn. J. Pharmacol. 30, 763 (1980); K. Hoshi, S. Fujino, ibid. 427. Antihypertensive effect in volunteers: T. Kawasaki et al., Eur. J. Clin. Pharmacol. 20, 399 (1981). Pharmacokinetics: C. Yamato et al., Xenobiotica 12, 549 (1982).

Chemical structure

Derivative

Hydrochloride.

Nomenclature

CAS number: 52712-76-2
E-643; Detantol (Eisai).
C19H27N5O3.HCl; mol wt 409.91.
C 55.67%, H 6.89%, N 17.09%, O 11.71%, Cl 8.65%.

Properties

Crystals from methanol/ethanol, mp 280-282°.

Therapeutic Category

Antihypertensive.

Keywords

Antihypertensive; Quinazoline Derivatives