The previously reported synthesis of [1]benzothiopyrano[4,3-b]indoles from the arylhydrazones of appropriate thiochroman-4-ones has been extended to diversely substituted thiochroman-4-ones to give a number of mono-and di-benzo-derivatives of this pseudoazulene, which are of potential biological interest as potential carcinogens or enzyme-inducers.
N. P. Buu-Hoï, P. Jacquignon, A. Croisy, A. Loiseau, F. Périn, A. Ricci and A. Martani, J. Chem. Soc. C, 1969, 1422 DOI: 10.1039/J39690001422
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