Patent GB816273 (http://l2.espacenet.com/dips/viewer?PN=GB816273&CY=gb&LG=en&DB=EPD)
Votava et al (1958) prepared a series of cycloalkyl monosubstituted amides in a series from aminocyclopropane
(a three-carbon ring system) through aminocycloheptane (a seven-carbon ring system). The aminocyclobutane and
aminocylopentane cycloalkylamides, shown above, gave antiserotonin effects in a rat intestine preparation that were
30% greater than LSD itself, but the compounds did not have LSD-like effects in man.
http://www.heffter.org/review/Review2/chap6.pdf (http://www.heffter.org/review/Review2/chap6.pdf)