Method for the preparation of (3S,3S′) 4,4′-disulfanediylbis (3-aminobutane 1-sulfonic acid)
AssigneeQuantum Genomics
InventorsFabrice Balavoine, Jonathan Madec, Jean-Marie Schneider, Gerard Coquerel, Nicolas Couvrat, Yohann Cartigny, Marie-Noelle Petit
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Abstract
The present invention relates to a new method for the preparation of (3S,3S′) 4,4′-disulfanediylbis(3-aminobutane 1-sulfonic acid) in five steps from (S)-ethyl 2-(benzyloxycarbonylamino)-4-(neopentyloxysulfonyl)butanoate A.
Claims19
A crystalline (3S,3S′) 4,4′-disulfanediylbis(3-aminobutane 1-sulfonic acid)trihydrate, which has a powder XRD diffractogram with characteristic peaks at approximately:
- 5.09;
- 14.30;
- 15.30;
- 18.32 degrees 2θ (K_alpha1 Cu anode).
A crystalline (3S,3S′) 4,4′-disulfanediylbis(3-aminobutane 1-sulfonic acid)trihydrate, which has a powder XRD diffractogram with characteristic peaks at approximately:
- 5.09;
- 14.30;
- 15.30;
- 18.32;
- 22.09;
- 22.79;
- 24.65;
- 25.60 and 25.83 degrees 2θ (K_alpha1 Cu anode).
A crystalline (3S,3S′) 4,4′-disulfanediylbis(3-aminobutane 1-sulfonic acid)trihydrate which has a powder XRD with the following peaks:
- h
- k
- l
- 2θ (°)
- d (Å)
- I (%)
- 0
- 0
- 1
- 5.09
- 17.34
- 76
- 0
- 1
- 2
- 14.30
- 6.19
- 23
- 0
- 0
- 3
- 15.30
- 5.79
- 100
- −1
- 0
- 2
- 17.62
- 5.03
- 15
- 0
- 1
- 3
- 18.32
- 4.84
- 96
- 1
- 0
- 2
- 18.61
- 4.76
- 30
- 1
- 1
- 1
- 18.98
- 4.67
- 16
- −1
- 1
- 2
- 20.34
- 4.36
- 26
- 0
- 2
- 1
- 20.75
- 4.28
- 26
- 1
- 1
- 2
- 21.16
- 4.19
- 11
- 1
- 0
- 3
- 22.09
- 4.02
- 37
- 0
- 1
- 4
- 22.79
- 3.90
- 37
- −1
- 1
- 3
- 23.12
- 3.84
- 6
- −1
- 0
- 4
- 24.65
- 3.61
- 74
- 1
- 2
- 0
- 25.15
- 3.54
- 7
- 0
- 0
- 5
- 25.60
- 3.48
- 62
- 1
- 2
- 1
- 25.83
- 3.45
- 39
- −1
- 1
- 4
- 26.66
- 3.34
- 7
- 0
- 1
- 5
- 27.52
- 3.24
- 13
- 1
- 1
- 4
- 28.05
- 3.18
- 4
- −1
- 0
- 5
- 28.94
- 3.08
- 4.
Dependencies are inferred from the claim text.