the ergoline esters , ly53857 [ 6-methyl-1- ( 1-methylethyl ) ergoline-8-carboxylic acid 2-hydroxy-1-methylpropylester ( z ) -2-butenedioate ] and sergolexole ( ly281067 ) ( [ trans- ( 8 beta ) ] 6-methyl-1- [ 1-methylethyl ] ergoline-8-carboxylic acid , 4-methoxycyclohexyl ester ( maleate salt ] are potent 5-hydroxytryptamine2 ( 5-ht2 ) receptor antagonists in vivo and in vitro .
C0007066
carboxylic
C0014898
ester