(+)-(4S,6S)-6-hydroxymethyl-6-methyl-1,4,5,6-tetrahydropyrimidine-4-carboxylic acid

(4S,6S)-6-(tert-Butyl-diphenyl-silanyloxymethyl)-6-methyl-5,6-dihydro-4H-pyrimidine-1,4-dicarboxylic acid 1-tert-butyl ester 4-ethyl ester

(2R,4R)-5-(tert-Butyl-diphenyl-silanyloxy)-4-methyl-2-sulfamoyloxy-pentanoic acid ethyl ester

(3S,5S)-3-tert-Butoxycarbonylamino-5-tert-butoxycarbonyloxymethyl-3-methyl-2-oxo-pyrrolidine-1-carboxylic acid tert-butyl ester

Carbonic acid (2S,4S)-4-tert-butoxycarbonylamino-4-methyl-5-oxo-pyrrolidin-2-ylmethyl ester tert-butyl ester

ethyl (2R)-4-(tert-butyldiphenylsilyloxymethyl)-2-hydroxy-4-pentenoate

(4S,6R)-4-(tert-Butyl-diphenyl-silanyloxymethyl)-4-methyl-2,2-dioxo-2λ6-[1,2,3]oxathiazinane-3,6-dicarboxylic acid 3-tert-butyl ester 6-ethyl ester

((1S,3S)-3-tert-Butoxycarbonylamino-4-hydroxy-1-hydroxymethyl-3-methyl-butyl)-carbamic acid tert-butyl ester

(2S,4S)-2,4-Bis-tert-butoxycarbonylamino-5-hydroxy-2-methyl-pentanoic acid methyl ester

(4S,6S)-isopropyl 6-((tert-butyldiphenylsilyloxy)methyl)-6-methyl-1-(thiophene-2-carbonyl)-1,4,5,6-tetrahydropyrimidine-4-carboxylate

((3S,5S)-5-Hydroxymethyl-3-methyl-2-oxo-pyrrolidin-3-yl)-carbamic acid tert-butyl ester

(1R,3S)-3-amino-1,3-diphenylpropan-1-ol