Reaktion #161920

Reaktionsgleichung

#35

N-[(9H-fluoren-9-ylmethoxy)carbonyl]-N-methyl-L-valyl-N-{(3R,4S,5S)-3-methoxy-1-[(2S)-2-{(1R,2R)-1-methoxy-2-methyl-3-[(2-phenylethyl)amino]-3-thioxopropyl}pyrrolidin-1-yl]-5-methyl-1-oxoheptan-4-yl}-N-methyl-L-valinamide

→

#36

Ausbeute 88.0%

N-methyl-L-valyl-N-{(3R,4S,5S)-3-methoxy-1-[(2S)-2-{(1R,2R)-1-methoxy-2-methyl-3-[(2-phenylethyl)amino]-3-thioxopropyl}pyrrolidin-1-yl]-5-methyl-1-oxoheptan-4-yl}-N-methyl-L-valinamide

Ausbeute 88.0%

Lösungsmittel

diethylamine

dichloromethane

Reaktionsbedingungen

Aufarbeitung

1. 1
   Sonstigewas purified by silica gel chromatography (Gradient: 0% to 10% methanol in dichloromethane)

Vorschrift

According to general procedure A, from #35 (465 mg, 0.502 mmol, 1 eq.) in dichloromethane (5 mL, 0.1 M) and diethylamine (5 mL) was synthesized the crude desired material, which was purified by silica gel chromatography (Gradient: 0% to 10% methanol in dichloromethane) to give #36 (310 mg, 88%) as a solid. LC-MS: m/z 704.6 [M+H+], retention time=0.74 minutes; HRMS: m/z calculated for C38H66N5O5S: 704.4779. found: 704.477 [M+H+]; 1H NMR (400 MHz, CD3OD), presumed to be a mixture of rotamers, characteristic signals: δ 7.23-7.30 (m, 4H), 7.15-7.22 (m, 1H), [4.68 (d, J=8.6 Hz) and 4.74 (d, J=8.0 Hz), total 1H], 3.39 and 3.40 (2 s, total 3H), 3.12 and 3.22 (2 br s, total 3H), [2.82 (d, J=6.0 Hz) and 2.84 (d, J=6.0 Hz), total 1H], 2.29 and 2.30 (2 s, total 3H), [1.27 (d, J=6.8 Hz) and 1.29 (d, J=6.6 Hz), total 3H], [0.84 (t, J=7.4 Hz) and 0.87 (t, J=7.4 Hz), total 3H].

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