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【结 构 式】

【分子编号】10139

【品名】(2S)-2-[[(2R)-2-(Acetoxy)propanoyl]amino]propionic acid

【CA登记号】

【 分 子 式 】C8H13NO5

【 分 子 量 】203.19496

【元素组成】C 47.29% H 6.45% N 6.89% O 39.37%

与该中间体有关的原料药合成路线共 1 条

合成路线1

该中间体在本合成路线中的序号:(X)

A new synthesis of FK-156 has been described: The esterification of meso-2,6-bis(benzyloxycarbonylamino)pimelic acid (I) with diazomethane gives the corresponding dimethyl ester (II), which is submitted to selective hydrolysis with a protease from Bacillus licheniformis, yielding the D-monoester (III). The reaction of (III) with PCl5 in dichloromethane affords the carboxyanhydride (IV), which is condensed with glycine 4-nitrobenzyl ester (V) by means of DIEA in dichloromethane to give the dipeptide (VI). The condensation of (VI) with tert-butoxycarbonyl-D-glutamic acid 1-benzyl ester (VII) by means of BOP and DIEA in dichloromethane-DMF affords the protected tripeptide (VIII), which is selectively deprotected with trifluoroacetic acid to the tripeptide (IX) with a free NH2 group. The condensation of (IX) with O-acetyl-D-lactyl-L-alanine (X) by means of BOP and DIEA as before yields the protected final peptide (XI), which is finally deprotected by hydrogenation with H2 over Pd/C in ethanol-formic acid and saponified with 1N NaOH. O-Acetyl-D-lactyl-L-alanine (X) is prepared as follows: The reaction of D-alanine (XII) with NaNO2 and acetic acid gives O-acetyl-D-lactic acid (XIII), which is condensed with L-alanine benzyl ester (XIV) with BOP and DIEA as before, yielding O-acetyl-D-lactyl-L-alanine benzyl ester (XV), which is finally debenzylated by hydrogenation with H2 over Pd/C in ethanol-formic acid to (X).

1 Kolodziejczyk, A.S.; Stoev, S.; Kolodziejczyk, A.M.; New convenient synthesis of immunostimulating peptides containing meso-diaminopimelic acid - Syntheses of FK-565 and. Int J Pept Protein Res 1992, 39, 4, 382.
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) 10130 (2R,6S)-2,6-Bis[[(benzyloxy)carbonyl]amino]heptanedioic acid C23H26N2O8 详情 详情
(II) 10131 dimethyl (2R,6S)-2,6-bis[[(benzyloxy)carbonyl]amino]heptanedioate C25H30N2O8 详情 详情
(III) 10132 (2S,6R)-2,6-Bis[[(benzyloxy)carbonyl]amino]-7-methoxy-7-oxoheptanoic acid C24H28N2O8 详情 详情
(IV) 10133 methyl (2R)-2-[[(benzyloxy)carbonyl]amino]-5-[(4S)-2,5-dioxo-1,3-oxazolan-4-yl]pentanoate C17H20N2O7 详情 详情
(V) 10134 4-Nitrobenzyl 2-aminoacetate C9H10N2O4 详情 详情
(VI) 10135 methyl (2R,6S)-6-amino-2-[[(benzyloxy)carbonyl]amino]-7-([2-[(4-nitrobenzyl)oxy]-2-oxoethyl]amino)-7-oxoheptanoate C25H30N4O9 详情 详情
(VII) 10136 (4R)-5-(Benzyloxy)-4-[(tert-butoxycarbonyl)amino]-5-oxopentanoic acid; N-t-BOC-D-glutamic acid alpha-benzyl ester 34404-30-3 C17H23NO6 详情 详情
(VIII) 10137 14-benzyl 5-methyl (5R,9S,14R)-18,18-dimethyl-9-[([2-[(4-nitrobenzyl)oxy]-2-oxoethyl]amino)carbonyl]-3,11,16-trioxo-1-phenyl-2,17-dioxa-4,10,15-triazanonadecane-5,14-dicarboxylate C42H51N5O14 详情 详情
(IX) 10138 methyl (2R,6S)-6-[[(4R)-4-amino-5-(benzyloxy)-5-oxopentanoyl]amino]-2-[[(benzyloxy)carbonyl]amino]-7-([2-[(4-nitrobenzyl)oxy]-2-oxoethyl]amino)-7-oxoheptanoate C37H43N5O12 详情 详情
(X) 10139 (2S)-2-[[(2R)-2-(Acetoxy)propanoyl]amino]propionic acid C8H13NO5 详情 详情
(XI) 10140 14-benzyl 5-methyl (5R,9S,14R,17S,20R)-17,20-dimethyl-9-[([2-[(4-nitrobenzyl)oxy]-2-oxoethyl]amino)carbonyl]-3,11,16,19,22-pentaoxo-1-phenyl-2,21-dioxa-4,10,15,18-tetraazatricosane-5,14-dicarboxylate C45H54N6O16 详情 详情
(XII) 10141 D-Alanine; D-2-Aminopropionic Acid 338-69-2 C3H7NO2 详情 详情
(XIII) 10142 (2R)-2-(Acetoxy)propionic acid 18668-00-3 C5H8O4 详情 详情
(XIV) 10143 benzyl (2S)-2-aminopropanoate C10H13NO2 详情 详情
(XV) 10144 benzyl (2S)-2-[[(2R)-2-(acetoxy)propanoyl]amino]propanoate C15H19NO5 详情 详情
Extended Information