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【结 构 式】

【药物名称】

【化学名称】6-Carbamoyl-4(S)-[5(S)-(cyclopentylsulfanylcarboxamido)-2(R)-(4-fluorobenzyl)-6-methyl-4-oxoheptanoyl]-2(E)-hexenoic acid ethyl ester

【CA登记号】

【 分 子 式 】C30H42FN3O6S

【 分 子 量 】591.74814

【开发单位】Agouron (Originator)

【药理作用】ANTIINFECTIVE THERAPY, Antiviral Drugs

合成路线1

Isobutyraldehyde (I) was condensed with vinylmagnesium bromide (II) to provide allylic alcohol (III).Transesterification with diethyl malonate (IV) in the presence of titanium ethoxide, followed by Claisen rearrangement at 190 C gave malonate (V). Subsequent basic hydrolysis of (V) with concomitant decarboxylation yielded 6-methyl-4-heptenoic acid (VI). This was transformed to the corresponding acid chloride by means of SOCl2 and then coupled with (1R,2R)-(-)-pseudoephedrine (VII) to produce the chiral amide (VIII). Alkylation of the dianion of (VIII) with 4-flourobenzyl bromide (IX) in the presence of LiCl afforded the benzylated compound (X). Further treatment of (X) with N-bromosuccinimide and AcOH in THF generated the bromolactone (XI). The bromo group of (XI) was then displaced with NaN3, and the resulting azide (XII) was hydrogenated in the presence of di-tert-butyl dicarbonate to provide carbamate (XIII). Basic hydrolysis of the lactone (XIII) gave hydroxyacid (XIV), which was oxidized to ketoacid (XV) by means of N-methylmorpholine-N-oxide and tetrapropyl ammonium perruthenate.

1 Worland, S.T.; Ferre, R.A.; Patick, A.K.; Prins, T.J.; Meador, J.W. III; Zhou, R.; Dragovich, P.S.; Fuhrman, S.A.; Matthews, D.A.; Ford, C.E.; Structure-based design, synthesis, and biological evaluation of irreversible human rhinovirus 3C protease inhibitors. 3. Structure-activity studies of ketomethylene-containing peptidomimetics. J Med Chem 1999, 42, 7, 1203.
中间体序号 中间体编号 品名 CAS号 分子式 供应商 用于合成
(I) 13226 2-Methylpropanal; Isobutyraldehyde 78-84-2 C4H8O 详情 详情
(II) 16524 bromo(vinyl)magnesium 1826-67-1 C2H3BrMg 详情 详情
(III) 24605 4-methyl-1-penten-3-ol C6H12O 详情 详情
(IV) 16829 Diethyl malonate 105-53-3 C7H12O4 详情 详情
(V) 24607 diethyl 2-[(E)-4-methyl-2-pentenyl]malonate C13H22O4 详情 详情
(VI) 24608 (E)-6-methyl-4-heptenoic acid C8H14O2 详情 详情
(VII) 24609 (1R,2R)-2-(methylamino)-1-phenyl-1-propanol C10H15NO 详情 详情
(VIII) 24610 (E)-N-[(1R,2R)-2-hydroxy-1-methyl-2-phenylethyl]-N,6-dimethyl-4-heptenamide C18H27NO2 详情 详情
(IX) 24611 1-(bromomethyl)-4-fluorobenzene 459-46-1 C7H6BrF 详情 详情
(X) 24612 (2S,4E)-2-(4-fluorobenzyl)-N-[(1R,2R)-2-hydroxy-1-methyl-2-phenylethyl]-N,6-dimethyl-4-heptenamide C25H32FNO2 详情 详情
(XI) 24613 (3R,5S)-5-[(1R)-1-bromo-2-methylpropyl]-3-(4-fluorobenzyl)dihydro-2(3H)-furanone C15H18BrFO2 详情 详情
(XII) 24614 (3R,5S)-5-[(1S)-1-azido-2-methylpropyl]-3-(4-fluorobenzyl)dihydro-2(3H)-furanone C15H18FN3O2 详情 详情
(XIII) 24615 tert-butyl (1S)-1-[(2S,4R)-4-(4-fluorobenzyl)-5-oxotetrahydro-2-furanyl]-2-methylpropylcarbamate C20H28FNO4 详情 详情
(XIV) 24616 (2R,4S,5S)-5-[(tert-butoxycarbonyl)amino]-2-(4-fluorobenzyl)-4-hydroxy-6-methylheptanoic acid C20H30FNO5 详情 详情
(XV) 24617 (2R,5S)-5-[(tert-butoxycarbonyl)amino]-2-(4-fluorobenzyl)-6-methyl-4-oxoheptanoic acid C20H28FNO5 详情 详情

合成路线2

Acid (XV) was coupled with protected amino acid (XVI) to give amide (XVII), and the Boc protecting group of (XVII) was then removed under acidic conditions. The resulting amine (XVIII) was condensed with cyclopentyl chlorothioformate (XIX) to provide thiocarbamate (XX). Finally, the title compound was obtained by trifluoroacetic acid-promoted cleavage of the trityl protecting group.

1 Worland, S.T.; Ferre, R.A.; Patick, A.K.; Prins, T.J.; Meador, J.W. III; Zhou, R.; Dragovich, P.S.; Fuhrman, S.A.; Matthews, D.A.; Ford, C.E.; Structure-based design, synthesis, and biological evaluation of irreversible human rhinovirus 3C protease inhibitors. 3. Structure-activity studies of ketomethylene-containing peptidomimetics. J Med Chem 1999, 42, 7, 1203.
中间体序号 中间体编号 品名 CAS号 分子式 供应商 用于合成
(XV) 24617 (2R,5S)-5-[(tert-butoxycarbonyl)amino]-2-(4-fluorobenzyl)-6-methyl-4-oxoheptanoic acid C20H28FNO5 详情 详情
(XVI) 24618 ethyl (E,4S)-4-amino-7-oxo-7-(tritylamino)-2-heptenoate C28H30N2O3 详情 详情
(XVII) 24619 ethyl (E,4S)-4-[[(2R,5S)-5-[(tert-butoxycarbonyl)amino]-2-(4-fluorobenzyl)-6-methyl-4-oxoheptanoyl]amino]-7-oxo-7-(tritylamino)-2-heptenoate C48H56FN3O7 详情 详情
(XVIII) 24620 ethyl (E,4S)-4-[[(2R,5S)-5-amino-2-(4-fluorobenzyl)-6-methyl-4-oxoheptanoyl]amino]-7-oxo-7-(tritylamino)-2-heptenoate C43H48FN3O5 详情 详情
(XIX) 24621 1-[(chlorocarbonyl)sulfanyl]cyclopentane C6H9ClOS 详情 详情
(XX) 24622 ethyl (E,4S)-4-[[(2R,5S)-5-[[(cyclopentylsulfanyl)carbonyl]amino]-2-(4-fluorobenzyl)-6-methyl-4-oxoheptanoyl]amino]-7-oxo-7-(tritylamino)-2-heptenoate C49H56FN3O6S 详情 详情
Extended Information