p. 2235 - 2246
(2004)(2-{(2,3-dihydroxy-propyl)-[2-(5-methyl-2,4-dioxo-3,4-dihydro-2H-pyrimidin-1-yl)-acetyl]-amino}-benzyl)-carbamic acid tert-butyl ester
{2-[[2-(5-methyl-2,4-dioxo-3,4-dihydro-2H-pyrimidin-1-yl)-acetyl]-(2-oxo-ethyl)-amino]-benzyl}-carbamic acid tert-butyl ester
(2-{allyl-[2-(5-methyl-2,4-dioxo-3,4-dihydro-2H-pyrimidin-1-yl)-acetyl]-amino}-benzyl)-carbamic acid tert-butyl ester