Enantiomerically pure solenopsin A(1) was prepared in 11 steps from L-aspartic acid (3) in an overall yield of 17%. 6R-(N-tosylamino)heptadecan-2-one (8), prepared from 3, underwent cyclization on acid catalysis to N-tosylamino-2,3-dehydro-2-methyl-6R-undecylpiperidine (9), which on reduction and deprotection gave 1.
Enantiomerically pure solenopsin A(1) was prepared in 11 steps from L-aspartic acid (3) in an overall yield of 17%. 6R-(N-tosylamino)heptadecan-2-one (8), prepared from 3, underwent cyclization on acid catalysis to N-tosylamino-2,3-dehydro-2-methyl-6R-undecylpiperidine (9), which on reduction and deprotection gave 1.
Enantiomerically pure solenopsin A(1) was prepared in 11 steps from L-aspartic acid (3) in an overall yield of 17%. 6R-(N-tosylamino)heptadecan-2-one (8), prepared from 3, underwent cyclization on acid catalysis to N-tosylamino-2,3-dehydro-2-methyl-6R-undecylpiperidine (9), which on reduction and deprotection gave 1.