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【结 构 式】

【分子编号】19618

【品名】benzyl (1R,2S,3S,4R)-1-benzyl-4-[[(benzyloxy)carbonyl]amino]-2,3-dihydroxy-5-phenylpentylcarbamate

【CA登记号】

【 分 子 式 】C34H36N2O6

【 分 子 量 】568.66972

【元素组成】C 71.81% H 6.38% N 4.93% O 16.88%

与该中间体有关的原料药合成路线共 6 条

合成路线1

该中间体在本合成路线中的序号:(III)

Swern oxidation of N-(benzyloxycarbonyl)-(R)-phenylalaninol (I) gave aldehyde (II), which was subjected to a vanadium-mediated pinacol coupling to yield diol (III). Protection of the hydroxyl groups of (III) by reaction with [2-(trimethylsilyl)-ethoxy]methyl chloride (SEMCl) (IV) and DIEA in DMF provided trimethylsilyl)ethoxymethyl ether (V), whose N-benzyloxycarbonyl groups were removed by hydrogenolysis over Pd/C to afford diamine (VI). Finally, cyclization of diamine (VI) with carbonyldiimidazole produced the cyclic urea (VII).

3 Lam, P.Y.; Eyermann, C.J.; Hodge, C.N.; Jadhav, P.K.; DeLucca, G.V. (DuPont Pharmaceuticals Co.); Cyclic ureas and analogues useful as retroviral protease inhibitors. EP 0607334; EP 0686151; EP 0765873; JP 1995500324; JP 1996509700; US 5610294; WO 9307128; WO 9419329 .
1 Hodge, C.N.; et al.; Improved cyclic urea inhibitors of the HIV-1 protease: Synthesis, potency, resistance profile, human pharmacokinetics and X-ray crystal structure of DMP 450. Chem Biol 1996, 3, 4, 301.
2 Lam, P.Y.S.; et al.; Cyclic HIV protease inhibitors. Synthesis, conformational analysis, P2/P2' structure-activity relationship, and molecular recognition of cyclic ureas. J Med Chem 1996, 39, 18, 3514.
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) 27228 benzyl (1R)-1-benzyl-2-hydroxyethylcarbamate C17H19NO3 详情 详情
(II) 27884 benzyl (1R)-1-benzyl-2-oxoethylcarbamate C17H17NO3 详情 详情
(III) 19618 benzyl (1R,2S,3S,4R)-1-benzyl-4-[[(benzyloxy)carbonyl]amino]-2,3-dihydroxy-5-phenylpentylcarbamate C34H36N2O6 详情 详情
(IV) 27243 [2-(chloromethoxy)ethyl](trimethyl)silane 76513-69-4 C6H15ClOSi 详情 详情
(V) 19920 benzyl (1R,2S,3S,4R)-1-benzyl-4-[[(benzyloxy)carbonyl]amino]-5-phenyl-2,3-bis[[2-(trimethylsilyl)ethoxy]methoxy]pentylcarbamate C46H64N2O8Si2 详情 详情
(VI) 19921 (1R,2S,3S,4R)-4-amino-1-benzyl-5-phenyl-2,3-bis[[2-(trimethylsilyl)ethoxy]methoxy]pentylamine; (2R,3S,4S,5R)-1,6-diphenyl-3,4-bis[[2-(trimethylsilyl)ethoxy]methoxy]-2,5-hexanediamine C30H52N2O4Si2 详情 详情
(VII) 19922 (4R,5S,6S,7R)-4,7-dibenzyl-5,6-bis[[2-(trimethylsilyl)ethoxy]methoxy]-1,3-diazepan-2-one C31H50N2O5Si2 详情 详情

合成路线2

该中间体在本合成路线中的序号:(III)

The synthesis of DMP-851 has been performed as follows: The oxidation of N-(benzyloxycarbonyl)-D-phenylalaninol (I) with NaOCl catalized by 2,2,6,6-tetramethyl-1-piperidinyloxyl free radical (TEMPO) and NaBr in water gives the corresponding aldehyde (II), which is dimerized by means of the Coulton's reagent (VCl3/Zn/THF) to the pinacol (III). The silylation of (III) with triethylsilyl chloride and imidazole in DMF yields the silylated diol (IV), which is submitted to hydrogenolysis with H2 over Pd/C in toluene affording the free diamine (V). The cyclization of (V) with carbonyldiimidazole (CDI) in toluene followed by desilylation with 1N HCl gives (4R,5S,6S,7R)-4,7-dibenzyl-5,6-dihydroxyperhydro-1,3-diazepin-2-one (VI), which is treated with 2,2-dimethoxypropane (VII) and p-toluenesulfonic acid in DMF yielding the corresponding acetonide (VIII) [Pierce, M.E. et al. J Org Chem 1996, 61(2): 444]. The methylation of (VIII) with methyl triflate in refluxing dichloroethane affords the cyclic isourea (IX), which is alkylated with butyl iodide/NaH in DMF giving the N-monobutyl derivative (X). A new alkylation of (X) with 3-cyano-4-fluorobenzyl bromide (XI) in refluxing acetonitrile yields the disubstituted cyclic urea (XII), which is finally treated with hydrazine in refluxing butanol to generate the indazole ring, and treated with HCl in methanol to eliminate the acetonide group.

1 Rodgers, J.D.; Lam, P.Y.S.; Johnson, B.L.; Wang, H.; Li, R.; Ru, Y.; Ko, S.S.; Seitz, S.P.; Trainor, G.L.; Anderson, P.S.; Klabe, R.M.; Bacheler, L.T.; Cordova, B.; Garber, S.; Reid, C.; Wright, M.R.; Chang, C.-H.; Erickson-Viitanen, S.; Design and selection of DMP 850 and DMP 851: The next generation of cyclic urea HIV protease inhibitors. Chem Biol 1998, 5, 10, 597.
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) 27228 benzyl (1R)-1-benzyl-2-hydroxyethylcarbamate C17H19NO3 详情 详情
(II) 27884 benzyl (1R)-1-benzyl-2-oxoethylcarbamate C17H17NO3 详情 详情
(III) 19618 benzyl (1R,2S,3S,4R)-1-benzyl-4-[[(benzyloxy)carbonyl]amino]-2,3-dihydroxy-5-phenylpentylcarbamate C34H36N2O6 详情 详情
(IV) 27221 benzyl (1R,2S,3S,4R)-1-benzyl-4-[[(benzyloxy)carbonyl]amino]-5-phenyl-2,3-bis[(triethylsilyl)oxy]pentylcarbamate C46H64N2O6Si2 详情 详情
(V) 27222 (1R,2S,3S,4R)-4-amino-1-benzyl-5-phenyl-2,3-bis[(triethylsilyl)oxy]pentylamine C30H52N2O2Si2 详情 详情
(VI) 27223 (4R,5S,6S,7R)-4,7-dibenzyl-5,6-dihydroxy-1,3-diazepan-2-one C19H22N2O3 详情 详情
(VII) 10722 1-Methoxy-1-methylethyl methyl ether; 2,2-Dimethoxypropane 77-76-9 C5H12O2 详情 详情
(VIII) 27049 (3aS,4R,8R,8aS)-4,8-dibenzyl-2,2-dimethylhexahydro-6H-[1,3]dioxolo[4,5-e][1,3]diazepin-6-one C22H26N2O3 详情 详情
(IX) 27224 (3aS,4R,8R,8aS)-4,8-dibenzyl-2,2-dimethyl-4,5,8,8a-tetrahydro-3aH-[1,3]dioxolo[4,5-e][1,3]diazepin-6-yl methyl ether C23H28N2O3 详情 详情
(X) 27885 (3aS,4R,8R,8aS)-4,8-dibenzyl-5-butyl-2,2-dimethyl-4,5,8,8a-tetrahydro-3aH-[1,3]dioxolo[4,5-e][1,3]diazepin-6-yl methyl ether C27H36N2O3 详情 详情
(XI) 27225 5-(bromomethyl)-2-fluorobenzonitrile C8H5BrFN 详情 详情
(XII) 27886 5-[[(3aS,4R,8R,8aS)-4,8-dibenzyl-7-butyl-2,2-dimethyl-6-oxohexahydro-5H-[1,3]dioxolo[4,5-e][1,3]diazepin-5-yl]methyl]-2-fluorobenzonitrile C34H38FN3O3 详情 详情

合成路线3

该中间体在本合成路线中的序号:(III)

The oxidation of N-(benzyloxycarbonyl)-D-phenylalaninol (I) with NaOCl catalized by 2,2,6,6-tetramethyl-1-piperidinyloxy free radical (TEMPO) and NaBr in water gives the corresponding aldehyde (II), which is dimerized by means of the Coulton's reagent (VCl3/Zn/THF) to the pinacol (III)(1). The silylation of (III) with triethylsilyl chloride and imidazole in DMF yields the silylated diol (IV), which is submitted to hydrogenolysis with H2 over Pd/C in toluene to afford the free diamine (V). The cyclization of (V) with carbonyldimidazole (CDI) in toluene followed by desilylation with 1N HCl gives (4R,5S,6S,7R)-4,7-dibenzyl-5,6-dihydroxyperhydro-1,3-diazepin-2-one (VI), which is treated with 2,2-dimethoxypropane (VII) and p-toluenesulfonic acid in DMF yielding the corresponding acetonide (VIII). The methylation of (VIII) with methyl triflate in refluxing dichloroethane affords the cyclic isourea (IX), which is alkylated with 3-cyano-4-fluorobenzyl bromide (X)/NaH in DMF giving the N-monobenzyl derivative (XI). A new alkylation of (XI) with benzyl bromide (XII) in refluxing acetonitrile yields the disubstituted cyclic urea (XIII), which is finally treated with hydrazine in refluxing butanol to generate the indazole ring and treated with HCl in methanol to eliminate the acetonide group.

1 Rodgers, J.D.; Lam, P.Y.S.; Johnson, B.L.; Wang, H.; Li, R.; Ru, Y.; Ko, S.S.; Seitz, S.P.; Trainor, G.L.; Anderson, P.S.; Klabe, R.M.; Bacheler, L.T.; Cordova, B.; Garber, S.; Reid, C.; Wright, M.R.; Chang, C.-H.; Erickson-Viitanen, S.; Design and selection of DMP 850 and DMP 851: The next generation of cyclic urea HIV protease inhibitors. Chem Biol 1998, 5, 10, 597.
2 Pierce, M.E.; et al.; Stereoselective synthesis of HIV-1 protease inhibitor, DMP 323. J Org Chem 1996, 61, 2, 444.
3 Rodgers, J.D.; Sun, J.-H. (DuPont Pharmaceuticals Co.); Method for preparing N-monosubstd. and N,N'-disubstd. unsymmetrical cyclic ureas. AU 96059868; EP 0837855; EP 1029859; US 5532357; WO 9640652 .
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) 27228 benzyl (1R)-1-benzyl-2-hydroxyethylcarbamate C17H19NO3 详情 详情
(II) 27220 benzyl (1R)-1-benzyl-3-oxopropylcarbamate C18H19NO3 详情 详情
(III) 19618 benzyl (1R,2S,3S,4R)-1-benzyl-4-[[(benzyloxy)carbonyl]amino]-2,3-dihydroxy-5-phenylpentylcarbamate C34H36N2O6 详情 详情
(IV) 27221 benzyl (1R,2S,3S,4R)-1-benzyl-4-[[(benzyloxy)carbonyl]amino]-5-phenyl-2,3-bis[(triethylsilyl)oxy]pentylcarbamate C46H64N2O6Si2 详情 详情
(V) 27222 (1R,2S,3S,4R)-4-amino-1-benzyl-5-phenyl-2,3-bis[(triethylsilyl)oxy]pentylamine C30H52N2O2Si2 详情 详情
(VI) 27223 (4R,5S,6S,7R)-4,7-dibenzyl-5,6-dihydroxy-1,3-diazepan-2-one C19H22N2O3 详情 详情
(VII) 10722 1-Methoxy-1-methylethyl methyl ether; 2,2-Dimethoxypropane 77-76-9 C5H12O2 详情 详情
(VIII) 27049 (3aS,4R,8R,8aS)-4,8-dibenzyl-2,2-dimethylhexahydro-6H-[1,3]dioxolo[4,5-e][1,3]diazepin-6-one C22H26N2O3 详情 详情
(IX) 27224 (3aS,4R,8R,8aS)-4,8-dibenzyl-2,2-dimethyl-4,5,8,8a-tetrahydro-3aH-[1,3]dioxolo[4,5-e][1,3]diazepin-6-yl methyl ether C23H28N2O3 详情 详情
(X) 27225 5-(bromomethyl)-2-fluorobenzonitrile C8H5BrFN 详情 详情
(XI) 27226 5-[[(3aS,4R,8R,8aS)-4,8-dibenzyl-6-methoxy-2,2-dimethyl-3a,4,8,8a-tetrahydro-5H-[1,3]dioxolo[4,5-e][1,3]diazepin-5-yl]methyl]-2-fluorobenzonitrile C31H32FN3O3 详情 详情
(XII) 12912 1-(Bromomethyl)benzene; Alpha-bromotoluene 100-39-0 C7H7Br 详情 详情
(XIII) 27227 5-[[(3aS,4R,8R,8aS)-4,7,8-tribenzyl-2,2-dimethyl-6-oxohexahydro-5H-[1,3]dioxolo[4,5-e][1,3]diazepin-5-yl]methyl]-2-fluorobenzonitrile C37H36FN3O3 详情 详情

合成路线4

该中间体在本合成路线中的序号:(I)

Diol (I) was protected as the bis(methoxymethyl) ether (III) by reaction with methoxymethyl bromide (II) in the presence of diisopropyl ethylamine in DMF, and then, the carbobenzoxy groups of (III) were removed by hydrogenolysis in the presence of Pd/C to afford diamine (IV). Subsequent treatment of (IV) with carbonyl diimidazole (CDI) and pyridine provided the cyclic urea (V). Alkylation of (V) with m-iodobenzyl bromide (VI) in the presence of NaH in DMF provided the bis(iodobenzyl) diazepinone (VII). The title compound was then obtained by Suzuki coupling of (VII) with the protected pyrazolylboronic acid (VIII) in the presence of Pd(PPh3)4 and K2CO3 to furnish the bis(pyrazolylbenzyl) derivative (IX), followed by deprotection of the (trimethylsilyl)ethoxymethyl groups upon treatment with HCl in dioxan-methanol.

1 Han, Q.; Lam, P.Y.S.; Li, R.; Jadhav, P.K.; Chang, C.-H.; Ru, Y.; Cyclic HIV protease inhibitors: Design and synthesis of orally bioavailable, pyrazole P2/P2' cyclic ureas with improved potency. J Med Chem 1998, 41, 12, 2019.
2 Lam, P.Y.; Eyermann, C.J.; Hodge, C.N.; Jadhav, P.K.; DeLucca, G.V. (DuPont Pharmaceuticals Co.); Cyclic ureas and analogues useful as retroviral protease inhibitors. EP 0607334; EP 0686151; EP 0765873; JP 1995500324; JP 1996509700; US 5610294; WO 9307128; WO 9419329 .
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) 19618 benzyl (1R,2S,3S,4R)-1-benzyl-4-[[(benzyloxy)carbonyl]amino]-2,3-dihydroxy-5-phenylpentylcarbamate C34H36N2O6 详情 详情
(II) 19619 bromo(methoxy)methane; bromomethyl methyl ether 13057-17-5 C2H5BrO 详情 详情
(III) 19620 benzyl (1R,2S,3S,4R)-1-benzyl-4-[[(benzyloxy)carbonyl]amino]-2,3-bis(methoxymethoxy)-5-phenylpentylcarbamate C38H44N2O8 详情 详情
(IV) 19621 (2R,3S,4S,5R)-3,4-bis(methoxymethoxy)-1,6-diphenyl-2,5-hexanediamine; (1R,2S,3S,4R)-4-amino-1-benzyl-2,3-bis(methoxymethoxy)-5-phenylpentylamine C22H32N2O4 详情 详情
(V) 19622 (4R,5S,6S,7R)-4,7-dibenzyl-5,6-bis(methoxymethoxy)-1,3-diazepan-2-one C23H30N2O5 详情 详情
(VI) 19623 1-(bromomethyl)-3-iodobenzene 49617-83-6 C7H6BrI 详情 详情
(VII) 19624 (4R,5S,6S,7R)-4,7-dibenzyl-1,3-bis(3-iodobenzyl)-5,6-bis(methoxymethoxy)-1,3-diazepan-2-one C37H40I2N2O5 详情 详情
(VIII) 19625 1-[[2-(trimethylsilyl)ethoxy]methyl]-1H-pyrazol-5-ylboronic acid C9H19BN2O3Si 详情 详情
(IX) 19626 (4R,5S,6S,7R)-4,7-dibenzyl-5,6-bis(methoxymethoxy)-1,3-bis[3-(1-[[2-(trimethylsilyl)ethoxy]methyl]-1H-pyrazol-5-yl)benzyl]-1,3-diazepan-2-one C55H74N6O7Si2 详情 详情

合成路线5

该中间体在本合成路线中的序号:(I)

Diol (I) was protected as the bis(methoxymethyl) ether (III) by reaction with methoxymethyl bromide (II) in the presence of diisopropyl ethylamine in DMF, and then, the carbobenzoxy groups of (III) were removed by hydrogenolysis in the presence of Pd/C to afford diamine (IV). Subsequent treatment of (IV) with carbonyl diimidazole (CDI) and pyridine provided the cyclic urea (V). Monoalkylation of (V) with m-iodobenzyl bromide (VI) in the presence KOH and polyethylene glycol in toluene provided the (iodobenzyl)diazepinone (VII). Suzuki coupling of (VII) with the protected pyrazolylboronic acid (VIII) in the presence of Pd(PPh3)4 and K2CO3 afforded the (pyrazolylbenzyl) derivative (IX). Further alkylation of (IX) with m-nitrobenzyl bromide (X) and NaH gave (XI). After deprotection of the methoxymethyl and the (trimethylsilyl)ethoxymethyl groups of (XI) upon treatment with HCl in dioxan-methanol, the title compound was obtained by hydrogenation of the nitro group in the presence of Pd/C.

1 Han, Q.; Lam, P.Y.S.; Li, R.; Jadhav, P.K.; Chang, C.-H.; Ru, Y.; Cyclic HIV protease inhibitors: Design and synthesis of orally bioavailable, pyrazole P2/P2' cyclic ureas with improved potency. J Med Chem 1998, 41, 12, 2019.
2 Lam, P.Y.; Eyermann, C.J.; Hodge, C.N.; Jadhav, P.K.; DeLucca, G.V. (DuPont Pharmaceuticals Co.); Cyclic ureas and analogues useful as retroviral protease inhibitors. EP 0607334; EP 0686151; EP 0765873; JP 1995500324; JP 1996509700; US 5610294; WO 9307128; WO 9419329 .
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) 19618 benzyl (1R,2S,3S,4R)-1-benzyl-4-[[(benzyloxy)carbonyl]amino]-2,3-dihydroxy-5-phenylpentylcarbamate C34H36N2O6 详情 详情
(II) 19619 bromo(methoxy)methane; bromomethyl methyl ether 13057-17-5 C2H5BrO 详情 详情
(III) 19620 benzyl (1R,2S,3S,4R)-1-benzyl-4-[[(benzyloxy)carbonyl]amino]-2,3-bis(methoxymethoxy)-5-phenylpentylcarbamate C38H44N2O8 详情 详情
(IV) 19621 (2R,3S,4S,5R)-3,4-bis(methoxymethoxy)-1,6-diphenyl-2,5-hexanediamine; (1R,2S,3S,4R)-4-amino-1-benzyl-2,3-bis(methoxymethoxy)-5-phenylpentylamine C22H32N2O4 详情 详情
(V) 19622 (4R,5S,6S,7R)-4,7-dibenzyl-5,6-bis(methoxymethoxy)-1,3-diazepan-2-one C23H30N2O5 详情 详情
(VI) 19623 1-(bromomethyl)-3-iodobenzene 49617-83-6 C7H6BrI 详情 详情
(VII) 19633 (4R,5S,6S,7R)-4,7-dibenzyl-1-(3-iodobenzyl)-5,6-bis(methoxymethoxy)-1,3-diazepan-2-one C30H35IN2O5 详情 详情
(VIII) 19625 1-[[2-(trimethylsilyl)ethoxy]methyl]-1H-pyrazol-5-ylboronic acid C9H19BN2O3Si 详情 详情
(IX) 19635 (4R,5S,6S,7R)-4,7-dibenzyl-5,6-bis(methoxymethoxy)-1-[3-(1-[[2-(trimethylsilyl)ethoxy]methyl]-1H-pyrazol-5-yl)benzyl]-1,3-diazepan-2-one C39H52N4O6Si 详情 详情
(X) 19636 1-(bromomethyl)-3-nitrobenzene 3958-57-4 C7H6BrNO2 详情 详情
(XI) 19637 (4R,5S,6S,7R)-4,7-dibenzyl-5,6-bis(methoxymethoxy)-1-(3-nitrobenzyl)-3-[3-(1-[[2-(trimethylsilyl)ethoxy]methyl]-1H-pyrazol-5-yl)benzyl]-1,3-diazepan-2-one C46H57N5O8Si 详情 详情

合成路线6

该中间体在本合成路线中的序号:(II)

Swern oxidation of N-(benzyloxycarbonyl)-(R)-phenylalaninol (I) with DMSO and oxalyl chloride afforded the corresponding aldehyde (II). Subsequent pinacol dimerization by treatment with VCl3 and Zn gave diol (III) with a 98% diastereomeric purity. After protection of the hydroxyl groups of (III) as the [2-(trimethylsilyl) ethoxy]methyl (SEM) ethers upon treatment with SEMCl and diisopropyl ethylamine, (IV) was obtained, then the N-benzyloxycarbonyl groups were removed by hydrogenolysis in the presence of Pd/C. The resulting diamine (V) was cyclized with carbonyl diimidazole and pyridine to furnish the cyclic urea (VI). Alkylation with benzyl bromide (VII) and NaH provided the bisbenzylated compound, which was subsequently deprotected by treatment with HCl in MeOH-dioxan to give (VIII) (1). The stereoselective hydroxyl inversion of the diol was then achieved Swern by oxidation to the ketol (IX), followed by reduction with NaBH4 in EtOH, and purification of the major isomer by column chromatography.

1 Lam, P.Y.S.; et al.; Cyclic HIV protease inhibitors. Synthesis, conformational analysis, P2/P2' structure-activity relationship, and molecular recognition of cyclic ureas. J Med Chem 1996, 39, 18, 3514.
2 Kaltenbach, R.F. III; Nugiel, D.A.; Lam, P.Y.; Klabe, R.M.; Seitz, S.P.; Stereoisomers of cyclic urea HIV-1 protease inhibitors: Synthesis and binding affinities. J Med Chem 1998, 41, 25, 5113.
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) 16586 benzyl N-[(1S)-1-benzyl-2-oxoethyl]carbamate C17H17NO3 详情 详情
(II) 19618 benzyl (1R,2S,3S,4R)-1-benzyl-4-[[(benzyloxy)carbonyl]amino]-2,3-dihydroxy-5-phenylpentylcarbamate C34H36N2O6 详情 详情
(IV) 19920 benzyl (1R,2S,3S,4R)-1-benzyl-4-[[(benzyloxy)carbonyl]amino]-5-phenyl-2,3-bis[[2-(trimethylsilyl)ethoxy]methoxy]pentylcarbamate C46H64N2O8Si2 详情 详情
(V) 19921 (1R,2S,3S,4R)-4-amino-1-benzyl-5-phenyl-2,3-bis[[2-(trimethylsilyl)ethoxy]methoxy]pentylamine; (2R,3S,4S,5R)-1,6-diphenyl-3,4-bis[[2-(trimethylsilyl)ethoxy]methoxy]-2,5-hexanediamine C30H52N2O4Si2 详情 详情
(VI) 19922 (4R,5S,6S,7R)-4,7-dibenzyl-5,6-bis[[2-(trimethylsilyl)ethoxy]methoxy]-1,3-diazepan-2-one C31H50N2O5Si2 详情 详情
(VII) 12912 1-(Bromomethyl)benzene; Alpha-bromotoluene 100-39-0 C7H7Br 详情 详情
(VIII) 19924 (4R,5S,6S,7R)-1,3,4,7-tetrabenzyl-5,6-dihydroxy-1,3-diazepan-2-one C33H34N2O3 详情 详情
(IX) 19925 (4R,6S,7R)-1,3,4,7-tetrabenzyl-6-hydroxy-1,3-diazepane-2,5-dione C33H32N2O3 详情 详情
Extended Information