Three new bases related to retamine are described: chlororetamine, isoretamine, and chloroisoretamine. Retamine and isoretamine are 8-hydroxy-(+)-sparteine epimers; chlororetamine is an 8-chloro-(+)-sparteine; chloroisoretamine is an 11-chloro-(+)-α-isosparteine. In the transformation of isoretamine to chloroisoretamine the rearrangement is explained by the modern concept of bridge carbonium ion. © 1961.