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Triphenylphosphine → [Rac]-2-ethoxy-3-(4-{2-[2-(4-isopropoxy-phenyl)-5-methyl-oxazol-4-yl]-ethoxy}-benzo[b]thiophen-7-yl)-propionic acid methyl ester
関与物質
| 役割 | 名称 | HCID | 仕込み量 |
|---|---|---|---|
| 反応物 | Triphenylphosphine | HCID 11776 | — |
| 反応物 | ethyl N-ethoxycarbonyliminocarbamate | HCID 220568 | — |
| 反応物 | 2-[2-(4-Isopropoxyphenyl)-5-methyl-1,3-oxazol-4-yl]ethanol | HCID 18003588 | — |
| 反応物 | [Rac]-2-ethoxy-3-(4-hydroxy-benzo[b]thiophen-7-yl)-propionic acid methyl ester | HCID 68616873 | — |
| 生成物 | [Rac]-2-ethoxy-3-(4-{2-[2-(4-isopropoxy-phenyl)-5-methyl-oxazol-4-yl]-ethoxy}-benzo[b]thiophen-7-yl)-propionic acid methyl ester | HCID 69557633 | — |
反応手順
In analogy to the procedure described in example 17 a], [rac]-2-ethoxy-3-(4-hydroxy-benzo[b]thiophen-7-yl)-propionic acid methyl ester was reacted with 2-[2-(4-isopropoxy-phenyl)-5-methyl-oxazol-4-yl]-ethanol [PCT Int. Appl. (2000), WO0008002A1] in the presence of triphenylphosphine and DEAD (diethyl azodicarboxylate) to yield [rac]-2-ethoxy-3-(4-{2-[2-(4-isopropoxy-phenyl)-5-methyl-oxazol-4-yl]-ethoxy}-benzo[b]thiophen-7-yl)-propionic acid methyl ester, which was further saponified in analogy to the procedure described in example 91 e] to yield [rac]-2-ethoxy-3-(4-{2-[2-(4-isopropoxy-phenyl-5-methyl-oxazol-4-yl]-ethoxy}-benzo[b]thiophen-7-yl)-propionic acid as light yellow amorphous solid.
情報源と証拠
| DOI | 10.6084/m9.figshare.5104873.v1 |
|---|---|
| 特許番号 | US06642389B2 |
| 出典データセット | uspto-grants-2003_11 |
| ORD ID | ord-67d03af7b80742bcaaadafdf40f5bccc |
| 出典メモ | uspto-grants-2003_11 |