| abstract |
A novel thiazolidine derivative having the following general formulan wherein R 1 and R 2 are each lower alkyl having 1 to 3 carbon atoms, or R' and R 2 together with the nitrogen atom to which they are attached form morpholino, piperazino, piperidino or pyrrolidino, or each one of which is substituted with 1 or 2 methyl groups and the pharmaceutically acceptable salts thereof, is a useful immunomodulator. |