CRYSTALLINE D-ISOGLUTAMYL-D-TRYPTOPHAN AND THE MONO AMMONIUM SALT OF D-ISOGLUTAMYL-D-TRYPTOPHAN
申请人:Tam Tim Fat
公开号:US20100016243A1
公开(公告)日:2010-01-21
A process for making pure crystalline D-isoglutamyl-D-tryptophan is provided which includes the step of deprotecting essentially pure N-tert-butoxycarbonyl-D-isoglutamyl-D-tryptophan or its diester to yield essentially pure D-isoglutamyl-D-tryptophan. A process is also provided for the preparation of pure mono ammonium salt of D-isoglutamyl-D-tryptophan from essentially pure N-tert-butoxycarbonyl-D-isoglutamyl-D-tryptophan. D-isoglutamyl-D-tryptophan, ammonium salt (1:1) is a stable pharmaceutical solid.
CRYSTALLINE D-ISOGLUTAMYL-D-TRYPTOPHAN AND THE MONO AMMONIUM SLAT OF D-ISOGLUTAMYL-D-TRYPTOPHAN
申请人:TAM Tim Fat
公开号:US20130059791A1
公开(公告)日:2013-03-07
A process for making pure crystalline D-isoglutamyl-D-tryptophan is provided which includes the step of deprotecting essentially pure N-tert-butoxycarbonyl-D-isoglutamyl-D-tryptophan or its diester to yield essentially pure D-isoglutamyl-D-tryptophan. A process is also provided for the preparation of pure mono ammonium salt of D-isoglutamyl-D-tryptophan from essentially pure N-tert-butoxycarbonyl-D-isoglutamyl-D-tryptophan. D-isoglutamyl-D-tryptophan, ammonium salt (1:1) is a stable pharmaceutical solid.