The chemical constituents of himandtanra species. III. The synthesis of some homologues of pyrene

Abstract

In an attempt to identify a dehydrogenation product of himbacine, several pyrene homologues in which the alkyl groups are attached to the 1-, 2-, 6-, and 7-positions, have been synthesized. None of the synthetic substances was identical with the " natural " pyrene from himbacine and it is concluded that the latter, if a single substance, is probably substituted in two dissimilar rings.