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CAS 623-47-2
ethyl propiolate(Ethoxycarbonyl)acetylene
Codes：SELP-007、(III)169995-11-a,(III)169995-11-b、(II)169995-17-a、(II)169995-22-a
Application context (from source-drug indications)
实体瘤塞普替尼甲状腺髓样癌塞普替尼非小细胞肺癌塞普替尼甲状腺瘤塞普替尼避孕屈螺酮口腔炎，口疮屈螺酮经前焦虑性障碍屈螺酮经前期综合征屈螺酮痛经屈螺酮抑郁屈螺酮
Source drugs (routes using this intermediate)
Position in synthesis routes (up/downstream chain)
Ordered by route registration; left → right is the synthesis direction. The highlighted node is the current CAS; others link to their own profiles.
4-(6-fluoropyridin-3-yl)-6-(2-hydroxy-2-methylpropoxy)pyrazolo[1,5-a]pyridine-3-carbonitrile→tert-butyl 3,6-diazabicyclo[3.1.1]heptane-6-carboxylate→tert-butyl 3-(5-(3-cyano-6-(2-hydroxy-2-methylpropoxy)pyrazolo[1,5-a]pyridin-4-yl)pyridin-2-yl)-3,6-diazabicyclo[3.1.1]heptane-6-carboxylate→4-(6-(3,6-diazabicyclo[3.1.1]heptan-3-yl)pyridin-3-yl)-6-(2-hydroxy-2-methylpropoxy)pyrazolo[1,5-a]pyridine-3-carbonitrile→6-methoxynicotinaldehyde→tert-butyl hydroxycarbamate→2,4,6-trimethylbenzenesulfonyl chloride→tert-butyl ((mesitylsulfonyl)oxy)carbamate→O-(mesitylsulfonyl)hydroxylamine→3-bromo-5-methoxypyridine→1-amino-3-bromo-5-methoxypyridin-1-ium 2,4,6-trimethylbenzenesulfonate→ethyl propiolate→ethyl 6-bromo-4-methoxypyrazolo[1,5-a]pyridine-3-carboxylate→ethyl 4-bromo-6-methoxypyrazolo[1,5-a]pyridine-3-carboxylate→4-bromo-6-methoxypyrazolo[1,5-a]pyridine→4-bromo-6-methoxypyrazolo[1,5-a]pyridine-3-carbaldehyde→(E)-4-bromo-6-methoxypyrazolo[1,5-a]pyridine-3-carbaldehyde oxime→4-bromo-6-methoxypyrazolo[1,5-a]pyridine-3-carbonitrile→4-bromo-6-hydroxypyrazolo[1,5-a]pyridine-3-carbonitrile→2,2-dimethyloxirane→4-bromo-6-(2-hydroxy-2-methylpropoxy)pyrazolo[1,5-a]pyridine-3-carbonitrile→2-fluoro-5-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)pyridine
(1aR,1bR,3S,5aR,5bS,7aS,8aS,9aS,9bS,9cR,9dR)-1b,3-Dihydroxy-5a,7a-dimethylperhydrocyclopropa[4,5]cyclopenta[1,2-a]cyclopropa[l]phenanthren-8-one→3beta-[tert-Butyl(dimethyl)silyloxy]-5beta-hydroxy-6beta,7beta:15beta,16beta-dimethyleneandrostan-17-one→(Ethoxycarbonyl)acetylene→3-[3beta-[tert-Butyl(dimethyl)silyloxy]-5beta,17beta-dihydroxy-6beta,7beta:15beta,16beta-dimethyleneandrostan-17-yl]-2-propynoic acid ethyl ester→3-[3beta,5beta,17beta-Trihydroxy-6beta,7beta:15beta,16beta-dimethyleneandrostan-17-yl]-2-propynoic acid ethyl ester→3-[5beta,17beta-Dihydroxy-6beta,7beta:15beta,16beta-dimethylene-3-oxoandrostan-17-yl]-2-propynoic acid ethyl ester→3-[17beta-Hydroxy-6beta,7beta:15beta,16beta-dimethylene-3-oxoandrost-4-en-17-yl]-2-propynoic acid ethyl ester→3-[17beta-Hydroxy-6beta,7beta:15beta,16beta-dimethylene-3-oxoandrost-4-en-17-yl]-2-propynoic acid
(1aR,1bR,3S,5aR,5bS,7aS,8aS,9aS,9bS,9cR,9dR)-1b,3-Dihydroxy-5a,7a-dimethylperhydrocyclopropa[4,5]cyclopenta[1,2-a]cyclopropa[l]phenanthren-8-one→(Ethoxycarbonyl)acetylene→3-[3beta,5beta,17beta-Trihydroxy-6beta,7beta:15beta,16beta-dimethyleneandrostan-17-yl]-2-propynoic acid ethyl ester→5beta-Hydroxy-6beta,7beta:15beta,16beta-dimethylene-3beta-(trimethylsilyloxy)androstan-17-one→3-[5beta,17beta-Dihydroxy-6beta,7beta:15beta,16beta-dimethylene-3beta-(trimethylsilyloxy)androstan-17-yl]-2-propynoic acid ethyl ester
(1aR,1bR,3S,5aR,5bS,7aS,8aS,9aS,9bS,9cR,9dR)-1b,3-Dihydroxy-5a,7a-dimethylperhydrocyclopropa[4,5]cyclopenta[1,2-a]cyclopropa[l]phenanthren-8-one→(Ethoxycarbonyl)acetylene→3-(3beta,5beta,17alpha-Trihydroxy-6beta,7beta:15beta,16beta-dimethyleneandrostan-17-yl)-2-propynoic acid ethyl ester→3-(3beta,5beta,17alpha-dihydroxy-6beta,7beta:15beta,16beta-dimethyleneandrostan-17-yl)propionic acid ethyl ester→3-(5beta,17alpha-Dihydroxy-3-oxo-6beta,7beta:15beta,16beta-dimethyleneandrostan-17-yl)propionic acid ethyl ester→3-(5beta,17alpha-Dihydroxy-6beta,7beta:15beta,16beta-dimethylene-3-oxoandrostan-17-yl)-2-propynoic acid ethyl ester→3-(17alpha-Hydroxy-6beta,7beta:15beta,16beta-dimethylene-3-oxoandrost-4-en-17-yl)-2-propynoic acid ethyl ester→3-(17alpha-Hydroxy-6beta,7beta:15beta,16beta-dimethylene-3-oxoandrost-4-en-17-yl)propionic acid ethyl ester
(1aR,1bR,3S,5aR,5bS,7aS,8aS,9aS,9bS,9cR,9dR)-1b,3-Dihydroxy-5a,7a-dimethylperhydrocyclopropa[4,5]cyclopenta[1,2-a]cyclopropa[l]phenanthren-8-one→(Ethoxycarbonyl)acetylene→3-[3beta,5beta,17beta-Trihydroxy-6beta,7beta:15beta,16beta-dimethyleneandrostan-17-yl]-2-propynoic acid ethyl ester→3-[5beta,17beta-Dihydroxy-6beta,7beta:15beta,16beta-dimethylene-3-oxoandrostan-17-yl]-2-propynoic acid ethyl ester→Ethyl 3-[(1aR,1bR,5aR,5bS,7aS,8S,8aS,9aS,9bS,9cR,9dR)-1b,8-dihydroxy-5a,7a-dimethyl-3-oxooctadecahydro-1H-cyclopropa[4,5]cyclopenta[1,2-a]cyclopropa[l]phenanthren-8-yl]propanoate→Potassium 3-[(1aR,5aR,5bS,7aS,8S,8aS,9aS,9bS,9cR,9dR)-8-hydroxy-5a,7a-dimethyl-3-oxo-1a,3,4,5,5a,5b,6,7,7a,8,8a,9,9a,9b,9c,9d-hexadecahydro-1H-cyclopropa[4,5]cyclopenta[1,2-a]cyclopropa[l]phenanthren-8-yl]propanoate→Sodium 3-[(1aR,5aR,5bS,7aS,8S,8aS,9aS,9bS,9cR,9dR)-8-hydroxy-5a,7a-dimethyl-3-oxo-1a,3,4,5,5a,5b,6,7,7a,8,8a,9,9a,9b,9c,9d-hexadecahydro-1H-cyclopropa[4,5]cyclopenta[1,2-a]cyclopropa[l]phenanthren-8-yl]propanoate
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