โ Scribed by C.N. Filer
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๐ SIMILAR VOLUMES
## Abstract 7,8โDidehydroโ4,5โepoxyโ3โethoxyโ17โmethyl(^3^H)โ, and โ17โmethyl (^14^C)morphinanโ6โol were prepared by substituting the Nโmethyl group with/^a^carbphenoxy group which was then either reduced with LiAl^3^H~4~ or removed to remethylate the Nโatom with ^14^CH~3~I.
## Abstract 10^โ3^M oxygenated aqueous solutions of thymidine preparations, labelled with ^14^C and ^3^H in various positions were gammairradiated. Radiation produats formed were followed in dependenae of irradiation doses. Their yields were confronted with produats formed during the autoradiolysis
## Abstract The preparation of [^3^H]Sch 727965 from unlabeled compound and tritiated water was base catalyzed. Diethyl [^13^C~3~]malonate was used to prepare [^13^C~3~]Sch 727965 in five steps in 21.8% overall yield. In a similar manner, [^14^C]Sch 727965 was prepared in five steps from diethyl [2