p. 540 - 541
(1981)p. 277 - 285
(2012/07/14)4-butanolide
triethyl phosphite
Ethyl 4-bromobutyrate
phosphonic acid diethyl ester
4-chloro-butyric acid ethyl ester
(3-benzyloxycarbonylamino-pentadecyl)-phosphonic acid diethyl ester
diethyl 4-[benzyloxy(methyl)amino]-4-oxobutylphosphonate
diethyl 4-(benzyloxyamino)-4-oxobutylphosphonate
4-(Diethoxy-phosphoryl)-2-(toluene-4-sulfonyloxymethyl)-butyric acid ethyl ester