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Paper | Regular issue | Vol 27, No. 5, 1988, pp.1191-1196
Published online, 1st January, 1970
DOI: 10.3987/COM-87-4439
A New, Efficient Synthesis of 5-Undecyl-6-hydroxy-4,7-dioxobenzothiazole (UHDBT), a Potent Electron Transport Inhibitor

David S. Selwood* and Karamjit S. Jandu

*Department of Medical Chemistry, The Wellcome Research Laboratories, Langley Court, Beckenham, Kent BR3 3BS, U.K.


An efficient preparation of 5-undecyl-6- hydroxy-4,7-dioxobenzothiazole (UHDBT) is described. The synthesis in 5 stages and 38% overall yield utilises thermal rearrangement of a 4-hydroxy-4-(5-thiazolyl)cyclobuten-3-one as its key step.