1.Dijkstra D, Mulder TB, Rollema H, Tepper PG, Van der Weide J, Horn AS.. (1988) Synthesis and pharmacology of trans-4-n-propyl-3,4,4a,10b-tetrahydro-2H,5H-1-benzopyrano[4,3-b ]-1,4-oxazin-7- and -9-ols: the significance of nitrogen pKa values for central dopamine receptor activation., 31 (11):[PMID:2903247][10.1021/jm00119a020]
2.DeWald HA, Heffner TG, Jaen JC, Lustgarten DM, McPhail AT, Meltzer LT, Pugsley TA, Wise LD.. (1990) Synthesis and dopamine agonist properties of (+-)-trans-3,4,4a,10b-tetrahydro-4-propyl-2H,5H-[1]benzopyrano [4,3-b]-1,4-oxazin-9-ol and its enantiomers., 33 (1):[PMID:1967318][10.1021/jm00163a068]
3.Wise LD, DeWald HA, Hawkins ES, Reynolds DM, Heffner TG, Meltzer LT, Pugsley TA.. (1988) 6- and 8-hydroxy-3,4-dihydro-3-(dipropylamino)-2H-1-benzopyrans. Dopamine agonists with autoreceptor selectivity., 31 (3):[PMID:3346882][10.1021/jm00398a032]