1. Proc Chem Soc;DHR Barton,1963
2. Barton DHR, Bhakuni DS, James R, Kirby GW (1967). Phenol oxidation and biosynthesis, part XII. Stereochemical studies related to the biosynthesis of the morphine alkaloids. J Chem Soc (C):128–132
3. Bentley KW (1954) The chemistry of the opium alkaloids. Clarendon Press, Oxford, p 124 Beyerman HC, Buurman E, Maat L, Olieman C (1976) Synthesis of racemic and of (+) and (-)-1methyldihydrothebainone. Red Tray Chim Pays-Bas Belg 95:184–188
4. Braude MC (1973) Narcotic antagonists. Raven Press, New York
5. DeGraw JI, Christensen JC, Brown VH, Cory MJ (1974) Investigation of the Grewe codeine method. Attempts to achieve a practical synthesis. Heterocycl Chem 11:363–367