FR-193108
Chemical Name: (+)-N-[1-[2-(3-Azabicyclo[3.2.2]non-3-yl)-2-oxoethyl]-5-(2-fluorophenyl)-9-methyl-2-oxo-2,3-dihydro-1H-1,4-benzodiazepin-3-yl]-N'-[3-(1H-tetrazol-5-yl)phenyl]urea
项目整合开发状态: Preclinical
项目研究机构: Fujisawa (Originator)
合成路线:The condensation of 2-methylaniline (I) with 2-fluorobenzonitrile (II) by means of BCl3 and AlCl3 gives 2-amino-2'-fluoro-3-methylbenzophenone (III),which is acylated at the amino group with bromoacetyl bromide (IV) in pyridine yielding the bromoacetamide (V).The cyclization of (V) with hydroxylamine and NaOH affords the benzodiazepinone-N-oxide (VI),which is treated with acetic anhydride to provide 3-acetoxy-5-(2-fluorophenyl)-9-methyl-2,3-dihydro-1H-1,4-benzodiazepin-2-one (VII).The reaction of (VII) with potassium phthalimide (VIII) and NaI gives the phthalimido derivative (IX),which by cleavage with hydrazine yields 3-amino-5-(2-fluorophenyl)-9-methyl-2,3-dihydro-1H-1,4-benzodiazepin-2-one (X).The protection of the amino group of (X) with Boc2O and TEA affords the carbamate (XI),which is alkylated with ethyl bromoacetate (XII) by means of NaH giving the ethoxycarbonylmethyl derivative (XIII).The hydrolysis of (XIII) with NaOH affords the corresponding carboxymethyl derivative (XIV),which is condensed with 3-azabicyclo[3,2,2]nonane (XV) by means of HOBT,WSCD and TEA to give the expected amide (XVI).The cleavage of the tert-butoxycarbonyl group of (XVI) with HCl yields the amine (XVII),which is finally condensed with the activated carbamate (XVIII) to furnish the title compound.
合成路线:The condensation of 3-amino-1-(2-cyclohexyl-2-oxoethyl)-5-ethyl-9-methyl-2,3-dihydro-1H-1,4-benzodiazepin-2-one (I) with N-(tert-butoxycarbonyl)-L-phenylalanine (II) by means of HOBT and WSCD in DMF gives the corresponding amide as a diastereomeric mixture (IIIa-b),which is deprotected at the Boc group by treatment with HCl in ethyl acetate yielding the diastereomeric mixture of L-phenylalanine amides (IVa-b).The HPLC chromatographic separation of both diastereomers affords pure (Va) and (Vb).The desired diastereomer (Va) is treated with phenyl isothiocyanate (VI) to provide the chiral amine (R)-(VII),which is finally condensed with 3-methylphenyl isocyanate (VIII) to furnish the target urea.
📌 参考资料/链接：
参考文献标题:Design of dual CCK-A and CCK-B receptor antagonists
文献作者:Satoh,Y.; Tabuchi,S.; Mitsui,H.
参考来源:Drugs Fut 1997,22(10),1117
📄 详细内容
合成路线:The condensation of 2-methylaniline (I) with 2-fluorobenzonitrile (II) by means of BCl3 and AlCl3 gives 2-amino-2'-fluoro-3-methylbenzophenone (III),which is acylated at the amino group with bromoacetyl bromide (IV) in pyridine yielding the bromoacetamide (V).The cyclization of (V) with hydroxylamine and NaOH affords the benzodiazepinone-N-oxide (VI),which is treated with acetic anhydride to provide 3-acetoxy-5-(2-fluorophenyl)-9-methyl-2,3-dihydro-1H-1,4-benzodiazepin-2-one (VII).The reaction of (VII) with potassium phthalimide (VIII) and NaI gives the phthalimido derivative (IX),which by cleavage with hydrazine yields 3-amino-5-(2-fluorophenyl)-9-methyl-2,3-dihydro-1H-1,4-benzodiazepin-2-one (X).The protection of the amino group of (X) with Boc2O and TEA affords the carbamate (XI),which is alkylated with ethyl bromoacetate (XII) by means of NaH giving the ethoxycarbonylmethyl derivative (XIII).The hydrolysis of (XIII) with NaOH affords the corresponding carboxymethyl derivative (XIV),which is condensed with 3-azabicyclo[3,2,2]nonane (XV) by means of HOBT,WSCD and TEA to give the expected amide (XVI).The cleavage of the tert-butoxycarbonyl group of (XVI) with HCl yields the amine (XVII),which is finally condensed with the activated carbamate (XVIII) to furnish the title compound.
合成路线:The condensation of 3-amino-1-(2-cyclohexyl-2-oxoethyl)-5-ethyl-9-methyl-2,3-dihydro-1H-1,4-benzodiazepin-2-one (I) with N-(tert-butoxycarbonyl)-L-phenylalanine (II) by means of HOBT and WSCD in DMF gives the corresponding amide as a diastereomeric mixture (IIIa-b),which is deprotected at the Boc group by treatment with HCl in ethyl acetate yielding the diastereomeric mixture of L-phenylalanine amides (IVa-b).The HPLC chromatographic separation of both diastereomers affords pure (Va) and (Vb).The desired diastereomer (Va) is treated with phenyl isothiocyanate (VI) to provide the chiral amine (R)-(VII),which is finally condensed with 3-methylphenyl isocyanate (VIII) to furnish the target urea.
参考文献标题:Aminohaloborane in organic synthesis.I.Specific ortho substitution reaction of anilines
文献作者:Toyoda,T.; Adachi,M.; Sugasawa,T.; et al.
参考来源:J Am Chem Soc 1978,1004842