(2R)-2-([2-[(tert-butoxycarbonyl)amino]-2-methylpropanoyl]amino)-3-(1H-indol-3-yl)propionic acid -Drug Synthesis Database

【结构式】

【分子编号】27721

【品名】(2R)-2-([2-[(tert-butoxycarbonyl)amino]-2-methylpropanoyl]amino)-3-(1H-indol-3-yl)propionic acid

【CA登记号】

【分子式】C₂₀H₂₇N₃O₅

【分子量】389.4516

【元素组成】C 61.68% H 6.99% N 10.79% O 20.54%

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：(XVI)

Alternatively, N-Boc-D-tryptophan (IX) was esterified with benzyl alcohol in the presence of EDC and DMAP to give benzyl ester (XIII). Deprotection of the Boc group of (XIII) with TFA, followed by coupling of the resulting amino ester (XIV) with N-Boc-2-aminoisobutyric acid (XI) provided protected dipeptide (XV). Hydrogenolytic removal of the benzyl ester of (XV) gave carboxylic acid (XVI), which was coupled to the (S)-nipecotate (VIII) to afford the precursor (XII). Finally, removal of the Boc protecting group by treatment with HCl in EtOAc yielded the title compound.

参考文献中间体

合成目标

【1】 Cheng, K.; Yang, L.; Morriello, G.; Smith, R.; Patchett, A.A.; Scheim, k.D.; Jacks, T.; Leung, K.; Thiazole-derived potent, highly bioavailable short duration growth hormone secretagogue L-165,666. 217th ACS Natl Meet (March 21 1999, Anaheim) 1999, Abst MEDI 074.
【2】 Morriello, G.J.; Patchett, A.A.; Yang, L.; Chen, M.H.; Nargund, R. (Merck & Co., Inc.); Piperidines, pyrrolidines and hexahydro-1H-azepines promote release of growth hormone. EP 0739204; US 5492916; US 5492920; US 5494919; WO 9513069 .

中间体序号	中间体编号	品名	CAS号	分子式	供应商	用于合成
(VIII)	26200	ethyl (3S)-3-(1,3-thiazol-4-ylmethyl)-3-piperidinecarboxylate		C₁₂H₁₈N₂O₂S	详情	详情
(IX)	16114	N-alpha-t-BOC-L-tryptophan; (2S)-2-[(tert-butoxycarbonyl)amino]-3-(1H-indol-3-yl)propionic acid	13139-14-5	C₁₆H₂₀N₂O₄	详情	详情
(IX)	18471	N-(tert-butoxycarbonyl)-2-methylalanine	30992-29-1	C₉H₁₇NO₄	详情	详情
(XII)	26203	ethyl (3S)-1-[(2R)-2-([2-[(tert-butoxycarbonyl)amino]-2-methylpropanoyl]amino)-3-(1H-indol-3-yl)propanoyl]-3-(1,3-thiazol-4-ylmethyl)-3-piperidinecarboxylate		C₃₂H₄₃N₅O₆S	详情	详情
(XIII)	27719	benzyl (2R)-2-[(tert-butoxycarbonyl)amino]-3-(1H-indol-3-yl)propanoate		C₂₃H₂₆N₂O₄	详情	详情
(XIV)	25797	benzyl (2S)-2-amino-3-(1H-indol-3-yl)propanoate		C₁₈H₁₈N₂O₂	详情	详情
(XV)	27720	benzyl (2R)-2-([2-[(tert-butoxycarbonyl)amino]-2-methylpropanoyl]amino)-3-(1H-indol-3-yl)propanoate		C₂₇H₃₃N₃O₅	详情	详情
(XVI)	27721	(2R)-2-([2-[(tert-butoxycarbonyl)amino]-2-methylpropanoyl]amino)-3-(1H-indol-3-yl)propionic acid		C₂₀H₂₇N₃O₅	详情	详情

Extended Information