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【结 构 式】

【分子编号】68092

【品名】ethyl 3-amino-4-methyl-2-thiophenecarboxylate

【CA登记号】 

【 分 子 式 】C8H11NO2S

【 分 子 量 】185.24688

【元素组成】C 51.87% H 5.99% N 7.56% O 17.27% S 17.31%

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:(I)

Cyclocondensation of ethyl 3-amino-4-methyl-2-thiophenecarboxylate (I) with urea (II) at 190 °C gives 7-methylthieno[3,2-d]pyrimidine-2,4-dione (III), which is chlorinated with POCl3 at reflux to yield 2,4-dichloro-7-methylthieno[3,2-d]pyrimidine (IV). Condensation of compound (IV) with morpholine (V) in MeoH affords 2-chloro-7-methyl-4-(4-morpholinyl)thieno[3,2-d]pyrimidine (VI) , which, after metalation with BuLi in THF, is formylated with DMF, providing the thieno[3,2-d]pyrimidine-6-carbaldehyde derivative (VII) . Reductive amination of aldehyde (VII) with N-Boc-piperazine (VIII) in the presence of HC(oMe)3, AcoH and naBH(oAc)3 in dichloroethane gives the piperazinylmethyl derivative (IX) , which by cleavage of the Boc moiety by means of HCl in CH2Cl2 produces the N-deprotected piperazine derivative (X). N-Acylation of compound (X) with (S)-lactic acid (XI) in the presence of HATU and DIEA in DMF generates the corresponding amide (XII), which is finally submitted to Suzuki coupling with the boronate ester (XIII) in the presence of PdCl2(PPh3)4 and Na2CO3 or K2CO3 in acetonitrile .
Alternatively, Suzuki coupling of chloro intermediate (IX) with boronate ester (XIII) in the presence of PdCl2(PPh3)2 and Na2CO3 in acetonitrile under microwave irradiation produces the 2-aminopyrimidine derivative (XIV), which is then N-deprotected by means of HCl in CH2Cl2 to yield the free piperazine derivative (XV). Finally, piperazine derivative (XV) is condensed with (S)-lactic acid (XI) in the presence of DIEA and HATU in DMF .

1 Belvin, M., Friedman, L., Hoeflich, K. et al. (Genentech, Inc.; F. Hoffmann-La Roche AG). Combinations of phosphoinositide 3-kinase inhibitor compounds and chemotherapeutic agents, and methods of use. Cn 101939006, EP 2205242, JP 2010539177, KR 2010085912, US 2011223619, US 8247397, Wo 2009036082.
2 Ebens, A.J. Jr., Friedman, L. (Genentech, Inc.). Combination of phosphoinositide 3-kinase inhibitor compounds and chemotherapeutic a gents for the treatment of hematopoietic malignancies. Cn 102369011, EP 2405916, JP 2012520313, KR 2011132442, US 2010233164, US 8536161, Wo 2010105008.
3 Sutherlin, D.P., Bao, L., Berry, M. et al. Discovery of a potent, selective, and orally available class I phosphatidylinositol 3-kinase (PI3K)/Mammalian target of rapamycin (mTOR) kinase inhibitor. J Med Chem 2011, 54(21): 7579-87.
4 Bayliss, T., Chuckowree, I., Folkes, A. et al. (Genentech, Inc.; F. Hoffmann-La Roche AG). Phosphoinositide 3-kinase inhibitor compounds and methods of use. CA 2671782, EP 2114949, EP 2518074, JP 2010512338, US 2008242665, US 7888352, US 8383620, US 2013129820, WO 2008070740.
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) 68092 ethyl 3-amino-4-methyl-2-thiophenecarboxylate   C8H11NO2S 详情 详情
(II) 19310 urea 57-13-6 CH4N2O 详情 详情
(III) 68093 7-methylthieno[3,2-d]pyrimidine-2,4-dione 35265-81-7 C7H6N2O2S 详情 详情
(IV) 68094 2,4-dichloro-7-methylthieno[3,2-d]pyrimidine 35265-83-9 C7H4Cl2N2S 详情 详情
(V) 10388 Morpholine 110-91-8 C4H9NO 详情 详情
(VI) 68095 4-(2-chloro-7-methylthieno[3,2-d]pyrimidin-4-yl)morpholine;2-chloro-7-methyl-4-(4-morpholinyl)thieno[3,2-d]pyrimidine   C11H12ClN3OS 详情 详情
(VII) 68096 2-chloro-7-methyl-4-morpholinothieno[3,2-d]pyrimidine-6-carbaldehyde   C12H12ClN3O2S 详情 详情
(VIII) 68097 tert-butyl piperazine-1-carboxylate 143238-38-4 C9H18NO2 详情 详情
(IX) 68098 tert-butyl 4-((2-chloro-7-methyl-4-morpholinothieno[3,2-d]pyrimidin-6-yl)methyl)piperazine-1-carboxylate   C21H30ClN5O3S 详情 详情
(X) 68099 4-(2-chloro-7-methyl-6-(piperazin-1-ylmethyl)thieno[3,2-d]pyrimidin-4-yl)morpholine hydrochloride   C16H22ClN5OS.HCl 详情 详情
(XI) 68100 (S)-lactic acid;(S)-2-hydroxypropanoic acid   C3H6O3 详情 详情
(XII) 68101 (S)-1-(4-((2-chloro-7-methyl-4-morpholinothieno[3,2-d]pyrimidin-6-yl)methyl)piperazin-1-yl)-2-hydroxypropan-1-one   C19H26ClN5O3S 详情 详情
(XIII) 68102 5-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)pyrimidin-2-amine 402960-38-7 C10H16BN3O2 详情 详情
(XIV) 68103 tert-butyl 4-((2-(2-aminopyrimidin-5-yl)-7-methyl-4-morpholinothieno[3,2-d]pyrimidin-6-yl)methyl)piperazine-1-carboxylate   C25H34N8O3S 详情 详情
(XV) 68104 5-(7-methyl-4-morpholino-6-(piperazin-1-ylmethyl)thieno[3,2-d]pyrimidin-2-yl)pyrimidin-2-amine   C20H26N8OS 详情 详情
Extended Information