The invention provides a novel method for synthesizing Morphine-6-Glucuronide comprising the step of reacting 3-O-pivaloyloxymorphine and methyl 1.alpha.,2-ethylorthopivalate-3-4,di-O-pivaloylglucouronate.

A invenção fornece um método da novela synthesizing Morphine-6-Glucuronide que compreende a etapa de reagir 3-O-pivaloyloxymorphine e 1.alpha. methyl, 2-ethylorthopivalate-3-4, di-O-pivaloylglucouronate-O-pivaloylglucouronate.