2-(4-(1-benzyl-1H-imidazol-2-yl)-4-phenylpiperidin-1-yl)pyrimidine

2-(4-(1-benzyl-1H-imidazol-2-yl)-4-phenylpiperidin-1-yl)benzo[d]thiazole

4-(1-benzyl-1H-imidazol-2-yl)-4-phenyl-1-(thiazol-2-yl)piperidine

4-(1-benzyl-1H-imidazol-2-yl)-N-ethyl-4-phenylpiperidine-1-carboxamide

4-(1-benzyl-1H-imidazol-2-yl)-N-(2-methoxyphenyl)-4-phenylpiperidine-1-carboxamide

4-(1-benzyl-1H-imidazol-2-yl)-N-(3-methoxyphenyl)-4-phenylpiperidine-1-carboxamide

4-(1-benzyl-1H-imidazol-2-yl)-N-methyl-N,4-diphenylpiperidine-1-carboxamide

4-(1-benzyl-1H-imidazol-2-yl)-N,4-diphenylpiperidine-1-sulfonamide

4-phenyl-4-[1H-imidazol-2-yl]-piperidine

(1S,2S,6R,14R,15R,16R)-5-(cyclopropylmethyl)-16-[(2R)-2-hydroxy-4-methylpentan-2-yl]-15-methoxy-13-oxa-5-azahexacyclo[13.2.2.12,8.01,6.02,14.012,20]icosa-8(20),9,11-trien-11-ol

(1S,2S,6R,14R,15R,16R)-5-(cyclopropylmethyl)-16-[(2R)-2-hydroxy-5-methylhexan-2-yl]-15-methoxy-13-oxa-5-azahexacyclo[13.2.2.12,8.01,6.02,14.012,20]icosa-8(20),9,11-trien-11-ol

(1R,5R,13R,17S)-17-{[(2E)-3-(4-chlorophenyl)prop-2-en-1-yl]amino}-4-(cyclopropylmethyl)-10-hydroxy-12-oxa-4-azapentacyclo[9.6.1.0^{1,13}.0^{5,17}.0^{7,18}]octadeca-7(18),8,10-trien-14-one

6-desoxymorphine

heterocodeine

(-)-(etorphine)

7,8-dihydro-3,6-didesoxymorphine

2-{8-[3-(5-methoxy-2-methyl-phenoxy)-4-methylpentyl]-4-oxo-1-phenyl-1,3,8-triaza-spiro[4.5]dec-3-yl}-N-methyl-acetamide

1-{1-[3-(5-methoxy-2-methyl-phenoxy)-4-methylpentyl]-piperidin-4-yl}-3-methylsulfanylmethyl-1,3-dihydro-benzimidazol-2-one

1-methanesulfonylmethyl-3-{1-[3-(5-methoxy-2-methyl-phenoxy)-4-methyl-pentyl]-piperidin-4-yl}-1,3-dihydro-benzimidazol-2-one

1-[1-[3-(5-methoxy-2-methylphenoxy)-4-methylpentyl]piperidin-4-yl]-3-(1H-1,2,4-triazol-5-ylmethyl)benzimidazol-2-one

1-methanesulfinylmethyl-3-{1-[3-(5-methoxy-2-methyl-phenoxy)-4-methyl-pentyl]-piperidin-4-yl}-1,3-dihydro-benzimidazol-2-one

1-{1-[3-(5-methoxy-2-methyl-phenoxy)-4-methylpentyl]-piperidin-4-yl}-3-(2-methylsulfanyl-ethyl)-1,3-dihydro-benzimidazol-2-one

2-(3-{1-[3-(5-methoxy-2-methyl-phenoxy)-4-methylpentyl]-piperidin-4-yl}-2-oxo-2,3-dihydro-benzimidazol-1-yl)-acetamide

(3-{1-[3-(5-methoxy-2-methyl-phenoxy)-4-methylpentyl]-piperidin-4-yl}-2-oxo-2,3-dihydro-benzimidazol-1-yl)-acetic acid methyl ester

3-(3-{1-[3-(5-methoxy-2-methyl-phenoxy)-4-methylpentyl]-piperidin-4-yl}-2-oxo-2,3-dihydro-benzimidazol-1-yl)-propionic acid methyl ester

codeine-6-methyl ether

6-desoxycodeine

7,8-dihydro-3-desoxymorphine

2-(3-(1-((1s,4s)-4-isopropylcyclohexyl)piperidin-4-yl)-2-oxo-2,3-dihydro-1H-benzo[d]imidazol-1-yl)-N-methylacetamide

7,8-dihydro-3-desoxyheterocodeine

(-)-Codeine