A new convenient three-step synthesis of the privileged CNS scaffold 1,2,3,4,10,10a-hexahydropyrazino[1,2-a]indoles has been developed. The method makes use of an intramolecular carbene-mediated C-H insertion in phenylpiperazine-derived tosylhydrazones made from 2-fluorobenzaldehydes. Notably, the piperazine can be replaced with other cyclic nitrogen bases and the methodology is successfully extended to pyrrolidine, piperidine, azepane, morpholine, and homopiperazine.
Chemical compounds of formula (I):
1
and pharmaceutically acceptable salts and addition compounds and prodrugs thereof are useful in therapy, particularly for the treatment of disorders of the central nervous system; damage to the central nervous system; cardiovascular disorders; gastrointestinal disorders; diabetes inspidus, and sleep apnea.
Chemical compounds of formula (I):
and pharmaceutically acceptable salts and addition compounds and prodrugs thereof are useful in therapy, particularly for the treatment of disorders of the central nervous system; damage to the central nervous system; cardiovascular disorders; gastrointestinal disorders; diabetes inspidus, and sleep apnea.
Chemical compounds of formula (I):
1
and pharmaceutically acceptable salts and addition compounds and prodrugs thereof are useful in therapy, particularly for the treatment of disorders of the central nervous system; damage to the central nervous system; cardiovascular disorders; gastrointestinal disorders; diabetes inspidus, and sleep apnea.
Chemical compounds of formula (I):
and pharmaceutically acceptable salts and addition compounds and prodrugs thereof are useful in therapy, particularly for the treatment of disorders of the central nervous system; damage to the central nervous system; cardiovascular disorders; gastrointestinal disorders; diabetes inspidus, and sleep apnea.