1454. Bruceantin

Nomenclature

CAS number: 41451-75-6
[11β,12α,15β(E)]-15-[(3,4-Dimethyl-1-oxo-2-pentenyl)oxy]-13,20-epoxy-3,11,12-trihydroxy-2,16-dioxopicras-3-en-21-oic acid methyl ester; NSC-165563.
C28H36O11; mol wt 548.58.
C 61.30%, H 6.61%, O 32.08%.

Description and references

Antileukemic quassinoid from the simaroubaceous tree Brucea antidysenterica J. F. Mill. Isoln and structure: S. M. Kupchan, DE 2347576; S. M. Kupchan, R. W. Britton, US 3969369 (1975, 1976 both to Research Corp.); S. M. Kupchan et al., J. Org. Chem. 40, 648 (1975). Mode of action: L. L. Liao et al., Mol. Pharmacol. 12, 167 (1976). In vivo study: R. K. Johnson et al., Cancer Treat. Rep. 62, 1535 (1978). Pharmacology: S. M. Sieber et al., ibid. 60, 1127 (1976); M. Fresno et al., Biochim. Biophys. Acta 518, 104 (1978). Clinical study: A. Y. Bedikian et al., Proc. Am. Assoc. Cancer Res. 20, 193 (1979). Toxicologic evaluation: T. R. Castles et al., U.S. NTIS Report PB-257175 (1976) 348 pp. Synthetic studies: O. D. Dailey, P. L. Fuchs, J. Org. Chem. 45, 216 (1980); R. J. Pariza, P. L. Fuchs, ibid. 48, 2306 (1983). Total synthesis: M. Sasaki et al., ibid. 55, 528 (1990).

Chemical structure

Properties

Crystals from ether, mp 225-226°. [α]D25 43° (c = 0.31 in pyridine). uv max (ethanol): 280, 221 nm (ε 8680, 18000); (ethanol, NaOH): 328, 221 nm (ε 7290, 28600). LD50 in male, female mice (mg/kg): 1.95, 2.58 i.v. (Castles).