ChemicalBook CAS DataBase List Peramivir

Peramivir synthesis

8synthesis methods

Product Name:Peramivir
CAS Number:229614-55-5
Molecular formula:C15H28N4O4
Molecular Weight:328.41

Cyclopentanecarboxylic acid, 3-[(1S)-1-(acetylamino)-2-ethylbutyl]-4-[[bis[[(1,1-dimethylethoxy)carbonyl]amino]methylene]amino]-2-hydroxy-, (1S,2S,3R,4R)-

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229614-55-5
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Yield:229614-55-5 73%

Reaction Conditions:

Stage #1: (-)-(1S,2S,3R,4R)-3-[(1S)-1-(Acetylamino)-2-ethylbutyl]-4-({[(tert-butoxycarbonyl)amino][(tert-butoxycarbonyl)-imino]methyl}amino)-2-hydroxycyclopentanecarboxylic Acidwith hydrogenchloride in water at 0;
Stage #2: with sodium hydroxide in water; pH=6 - 7;

Steps:

5

Example 55. (1^,2^,3^,4^)-3-(1-306αιηο-2-6Ηγ1 υγ1)-4^υαη(1ηο-2- hydroxycyclopent -anecarboxylic acid (Peramivir I)[0080] Compound 17 ( from example 4, 1.1 g, 2 mmol) was dissolved in aq. HC1 ( 6N, 6 mL, 36 mmol) at 0 °C. The mixture was stirred at room temperature overnight. The resulting solution was neutralized to pH 6-7 using ice-cold 1 N NaOH aq. solution. The mixture was concentrated to 1.5 ml by rotary evaporation. To this, methanol (20 mL) was added. The precipitate was filtered, and the filtrate was concentrated. The resulting white solid was recrystallized frommethanol/water (1 : 1, v/v) to give Peramivir I as a white solid.[0081] Yield: 500 mg (73%).[0082] MS (M+l ) : 329.[0083] H NMR (400 MHz, D₂0) δ 4.21 (d, J= 10.6 Hz, 2H), 3.70 (dd, J= 14.6, 9.0 Hz, 1H), 2.57 (d, J= 4.8 Hz, 1H), 2.40 (dt, J= 17.7, 8.9 Hz, 1H), 2.14 - 2.01 (m, 1H), 1.81 (s, 3H), 1.75 - 1.58 (m, 1H), 1.31 (s, 3H), 0.78 (ddd, J= 21.6, 18.6, 6.8 Hz, 8H). (See attached Chart 5)

References:

WO2012/145932,2012,A1 Location in patent:Page/Page column 28-29