As reações de crotonaldeído (8) com tiofenol (2) e benzalacetona (10) com 1,2-etanoditiol (11) levam aos produtos de adição de Michael. As reações de tiofenol (2) com (R)-carvona (13) e (S)-perilaldeído (15) levam aos produtos (2S,3R,5S)-5-isopropenil-2-metil-3-feniltio-cicloexanona (14) e (1R,2R,4S)-4-isopropenil-2-feniltio-cicloexano carbaldeído (16), respectivamente. Também é apresentada a elucidação inequívoca da estereoquímica de 14 e 16 por RMN.

The reactions of crotonaldehyde (8) with thiophenol (2) and benzalacetone (10) with ethane-1,2-dithiol (11) yield Michael addition products. The reactions of thiophenol (2) with (R)-carvone (13) and (S)-perillaldehyde (15) lead to (2S,3R,5S)-5-isopropenyl-2-methyl-3-(phenylthio)cyclohexanone (14) and (1R,2R,4S)-4-isopropenyl-2-(phenylthio)cyclohexanecarbaldehyde (16), respectively. An unambiguous elucidation of the stereochemistry of 14 and 16 by NMR is also presented.

Aminoalcohols have found important applications in synthetic and medicinal chemistry, being used as chiral building blocks for the synthesis of many biologically active compounds. This class of compounds has been also used as chiral auxiliaries and ligands in asymmetric synthesis. Due to the importance of aminoalcohols in the treatment of several diseases, such as tuberculosis, the aim of this article is the synthesis and preliminary evaluation against tuberculosis of six aminoalcohols in 5 or 6 steps using D-mannitol as starting material, which is a useful carbohydrate employed in many syntheses.