unclassified drug 8 Ugi reaction 6 article 6 nonhuman 6 Azasteroids 4 Azasterols 4 Humans 4 Magnetic Resonance Spectroscopy 4 azasteroid 4 azasterol derivative 4 chemical reaction 4 drug synthesis 4 drug targeting 4 1 alkyl bisphosphonate derivative 2 1 amino bisphosphonate derivative 2 1 hydroxy bisphosphonate derivative 2 1h benzo[d]imidazol 2(3h) one 2 4 (2' (1h benzo[b]azol 3 yl)ethyl) 5 n cyclohexylcarboxamido 4 aza 5alpha cholestan 3 one 2 4 (2' (1h benzo[b]azol 3 yl)ethyl) 5 n cyclohexylcarboxamido 4 aza 5beta cholestan 3 one 2 4 (2' phenylethyl) 5 n cyclohexylcarboxamido 4 aza 5alpha cholestan 3 one 2 4 (2' phenylethyl) 5 n cyclohexylcarboxamido 4 aza 5beta cholestan 3 one 2 4 (3' azidopropyl) 5 n (ethoxycarbonylmethylen)carboxamido 4 aza 5alpha cholestan 3 one 2 4 (3' azidopropyl) 5 n (ethoxycarbonylmethylen)carboxamido 4 aza 5beta cholestan 3 one 2 4 benzyl 5 n (diethoxyphosphorylmethylen)carboxamido 4 aza 5alpha cholestan 3 one 2 4 benzyl 5 n (diethoxyphosphorylmethylen)carboxamido 4 aza 5beta cholestan 3 one 2 4 benzyl 5 n (methoxycarbonylmethylen)carboxamido 4 aza 5alpha cholestan 3 one 2 4 benzyl 5 n (methoxycarbonylmethylen)carboxamido 4 aza 5beta cholestan 3 one 2 4 benzyl 5 n cyclohexylcarboxamido 4 aza 5alpha cholestan 3 one 2 4 benzyl 5 n cyclohexylcarboxamido 4 aza 5beta cholestan 3 one 2 4 butyl 5 n cyclohexylcarboxamido 4 aza 5alpha cholestan 3 one 2