1. A. S. Bondareva, in:Antitumor Antibiotics [in Russian], M. M. Maevskii (ed.), Meditsina, Moscow (1962), pp. 94–149.
2. M. J. Waring,Ann. Rev. Biochem,50, 159–192 (1981).
3. B. C. Baguley,Anticanc. Drug. Dispas.,6, 1–35 (1991).
4. Brit. Patent No. 807687;Chem. Abstr.,53, 12311 (1959).
5. B. Weinstein, O. P. Crews, M. A. Leaffer, et al.,J. Org. Chem.,27(4), 1389–1395 (1962).