opt.-inakt. 1,5-Bis-<3,5-dinitro-benzoyloxy>-2,4-dimethyl-pentan

(4R,6S)-dimethyl 2-methoxycarbonyl-4,6-dimethylnonanoate

(2S,4S)-1-t-butyldimethylsilyloxy-4,6-dimethyl-5-heptanol

(2R,4S)-2,4-dimethyl-1-iodo-heptane

(4R,6S)-2-hydroxymethyl-4,6-dimethylnonyl 2-bromopropanoate