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【结 构 式】

【药物名称】Manzamine A

【化学名称】24-(9H-Pyrido[3,4-b]indol-1-yl)-2,3,5,6,7,8,11,12,13,13a,15,16,17,18,20a,21-hexadecahydro-1,13-etheno-4,21a-methano-1H-azocino[1',2':1,5]pyrrolo[3,2-e]azacyclopentadecin-13-ol

【CA登记号】104196-68-1

【 分 子 式 】C36H44N4O

【 分 子 量 】548.77828

【开发单位】Harbor Branch Oceanographic Institution (Originator)

【药理作用】Alkaloids

合成路线1

The protection of 5-amino-1-pentanol (I) gives the fully protected compound (II), which is condensed with propenal (III) yielding the 3-aminopropanal derivative (IV). The condensation of aldehyde (IV) with phosphorane (V) yielded the protected 5-amino-2-bromopentenoic ester derivative (VI), which is deprotected with trimethylsilyl triflate to afford the ester (VII) with an unprotected secondary amino group.

1 Martin, S.F.; et al.; Enantioselective total synthesis of ircinal A and related manzamine alkaloids. J Am Chem Soc 1999, 121, 4, 866.
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) 22846 5-amino-1-pentanol 2508-29-4 C5H13NO 详情 详情
(II) 24910 tert-butyl 5-[[tert-butyl(diphenyl)silyl]oxy]pentylcarbamate C26H39NO3Si 详情 详情
(III) 17668 acrylaldehyde; Acrolein 107-02-8 C3H4O 详情 详情
(IV) 24912 tert-butyl 5-[[tert-butyl(diphenyl)silyl]oxy]pentyl(3-oxopropyl)carbamate C29H43NO4Si 详情 详情
(V) 24913 methyl 2-bromo-2-(triphenylphosphoranylidene)acetate C21H18BrO2P 详情 详情
(VI) 24914 methyl (Z)-2-bromo-5-[(tert-butoxycarbonyl)(5-[[tert-butyl(diphenyl)silyl]oxy]pentyl)amino]-2-pentenoate C32H46BrNO5Si 详情 详情
(VII) 24915 methyl (Z)-2-bromo-5-[(5-[[tert-butyl(diphenyl)silyl]oxy]pentyl)amino]-2-pentenoate C27H38BrNO3Si 详情 详情

合成路线2

The reaction of protected pyrrolidone (VIII) with LHMDS and CO2 affords the corresponding pyrrolidonecarboxylic acid (IX), which is reduced at the ketonic oxygen with NaBH4 providing the hydroxyacid (X). The condensation of the previously obtained amino acid (VII) with the acid (X) by means of oxalyl chloride and triethylamine affords amide (XI), which is condensed with vinyltributylstannane (XII) by means of Pd(PPh3)4 to give the butaiene derivative (XIII). The spontaneous Diels-Alder cyclization of (XIII) yields the tricyclic compound (XIV), which is oxidized with CrO3 to the dione (XV). The deprotection of the hydroxyl groups of (XV), their reaction with oxalyl chloride and with methylenetriphenylphosphorane provides compound (XVI) with two terminal reactive double bonds. The reduction of (XVI) with DIBAL, followed by oxidation with Dess Martin periodinane (DMP) affords the corresponding aldehyde (XVII).

1 Martin, S.F.; et al.; Enantioselective total synthesis of ircinal A and related manzamine alkaloids. J Am Chem Soc 1999, 121, 4, 866.
中间体序号 中间体编号 品名 CAS号 分子式 供应商 用于合成
27301 methylene(triphenyl)phosphorane C19H17P 详情 详情
(VII) 24915 methyl (Z)-2-bromo-5-[(5-[[tert-butyl(diphenyl)silyl]oxy]pentyl)amino]-2-pentenoate C27H38BrNO3Si 详情 详情
(VIII) 24916 tert-butyl (2R)-2-([[tert-butyl(diphenyl)silyl]oxy]methyl)-5-oxo-1-pyrrolidinecarboxylate C26H35NO4Si 详情 详情
(IX) 24917 (5R)-1-(tert-butoxycarbonyl)-5-([[tert-butyl(diphenyl)silyl]oxy]methyl)-2-oxo-3-pyrrolidinecarboxylate C27H34NO6Si 详情 详情
(X) 24918 (5R)-1-(tert-butoxycarbonyl)-5-([[tert-butyl(diphenyl)silyl]oxy]methyl)-2-hydroxy-3-pyrrolidinecarboxylate C27H36NO6Si 详情 详情
(XI) 24919 tert-butyl (2R)-4-[[[(E)-4-bromo-5-methoxy-5-oxo-3-pentenyl](5-[[tert-butyl(diphenyl)silyl]oxy]pentyl)amino]carbonyl]-2-([[tert-butyl(diphenyl)silyl]oxy]methyl)-2,3-dihydro-1H-pyrrole-1-carboxylate C54H71BrN2O7Si2 详情 详情
(XII) 24920 tributyl(vinyl)stannane;Tributylvinylstannane;Vinyltributylstannane 7486-35-3 C14H30Sn 详情 详情
(XIII) 24921 tert-butyl (2R)-2-([[tert-butyl(diphenyl)silyl]oxy]methyl)-4-([(5-[[tert-butyl(diphenyl)silyl]oxy]pentyl)[(3Z)-4-(methoxycarbonyl)-3,5-hexadienyl]amino]carbonyl)-2,3-dihydro-1H-pyrrole-1-carboxylate C56H74N2O7Si2 详情 详情
(XIV) 24922 1-(tert-butyl) 8-methyl (2R,3aS,7aR,10aS)-2-([[tert-butyl(diphenyl)silyl]oxy]methyl)-5-(5-[[tert-butyl(diphenyl)silyl]oxy]pentyl)-4-oxo-2,3,5,6,7,7a,10,10a-octahydropyrrolo[2,3-i]isoquinoline-1,8(4H)-dicarboxylate C56H74N2O7Si2 详情 详情
(XV) 24923 1-(tert-butyl) 8-methyl (2R,3aS,7aR,10aR)-2-([[tert-butyl(diphenyl)silyl]oxy]methyl)-5-(5-[[tert-butyl(diphenyl)silyl]oxy]pentyl)-4,10-dioxo-2,3,5,6,7,7a,10,10a-octahydropyrrolo[2,3-i]isoquinoline-1,8(4H)-dicarboxylate C56H72N2O8Si2 详情 详情
(XVI) 24924 1-(tert-butyl) 8-methyl (2R,3aS,7aR,10aR)-5-(5-hexenyl)-4,10-dioxo-2-vinyl-2,3,5,6,7,7a,10,10a-octahydropyrrolo[2,3-i]isoquinoline-1,8(4H)-dicarboxylate C26H36N2O6 详情 详情
(XVII) 24925 tert-butyl (2R,3aR,7aR,10aR)-8-formyl-5-(5-hexenyl)-10-oxo-2-vinyl-2,3,5,6,7,7a,10,10a-octahydropyrrolo[2,3-i]isoquinoline-1(4H)-carboxylate C25H36N2O4 详情 详情

合成路线3

The ketalization of (XVII) with methyl orthoformate in methanol gives the dinethylketal (XVIII), which is condensed with 3-butenyllithium (XIX) to afford the tetracyclic compound (XX). A new cyclization of (XX) by means of a ruthenium catalyst closes the macrocycle of (XXI), which is condensed with 5-hexenoyl chloride (XXII) and triethylamine affording the precursor (XXIII) of the cyclooctane ring found in the target compound. The cyclization of (XXIII) with the same ruthenium catalyst gives the intermediate (XXIV) with the ring system of the target compound, which is finally reduced with DIBAL in order to eliminate the extra oxygen of (XXIV), and oxidized again with Dess Martin periodinane (DMP) to regenerate the formyl group reduced by the DIBAL to yield the target ircinal A.

1 Martin, S.F.; et al.; Enantioselective total synthesis of ircinal A and related manzamine alkaloids. J Am Chem Soc 1999, 121, 4, 866.
中间体序号 中间体编号 品名 CAS号 分子式 供应商 用于合成
(XVII) 24926 tert-butyl (2R,3aR,7aR,10aR)-8-formyl-5-(5-hexenyl)-10-oxo-2-vinyl-2,3,5,6,7,7a,10,10a-octahydropyrrolo[2,3-i]isoquinoline-1(4H)-carboxylate C25H36N2O4 详情 详情
(XVIII) 24927 tert-butyl (2R,3aR,7aR,10aR)-8-(dimethoxymethyl)-5-(5-hexenyl)-10-oxo-2-vinyl-2,3,5,6,7,7a,10,10a-octahydropyrrolo[2,3-i]isoquinoline-1(4H)-carboxylate C27H42N2O5 详情 详情
(XIX) 24928 4-pentenyllithium C5H9Li 详情 详情
(XX) 24929 (4aR,6aS,10R,11aR,11bR)-6a-(3-butenyl)-5-(dimethoxymethyl)-2-(5-hexenyl)-10-vinyl-2,3,4,4a,6a,10,11,11b-octahydro-1H-[1,3]oxazolo[5,4,3-hi]pyrido[3,4-d]indol-8-one C27H40N2O4 详情 详情
(XXI) 24930 (1S,13R,14R,16R,23R)-21-(dimethoxymethyl)-16-vinyl-19-oxa-10,17-diazapentacyclo[11.6.2.1(1,14).1(10,14).0(17,23)]tricosa-4,20-dien-18-one C25H36N2O4 详情 详情
(XXII) 24931 5-hexenoyl chloride C6H9ClO 详情 详情
(XXIII) 24932 1-[(1R,13S,14R,16R,18R)-19-(dimethoxymethyl)-13-hydroxy-16-vinyl-4,15-diazatetracyclo[11.5.2.1(4,18).0(14,18)]henicosa-9,19-dien-15-yl]-5-hexen-1-one C30H46N2O4 详情 详情
(XXIV) 24933 (1R,2R,4R,12R,13S)-13-hydroxy-10-oxo-11,22-diazapentacyclo[11.11.2.1(2,22).0(2,12).0(4,11)]heptacosa-5,16,25-triene-25-carbaldehyde C26H36N2O3 详情 详情
(XXV) 24934 (1R,2R,4R,12R,13S)-25-(hydroxymethyl)-11,22-diazapentacyclo[11.11.2.1(2,22).0(2,12).0(4,11)]heptacosa-5,16,25-trien-13-ol C26H40N2O2 详情 详情
Extended Information