Leuprorelin synthesis process
A technology of leuprolide and synthesis technique, applied in the field of synthesis technique of leuprolide, can solve problems such as being unsuitable for large-scale production, complicated production process, low production efficiency, etc., and achieves the improvement of single-pass conversion rate and product. Productivity, overcoming the effect of many processes, and improving work efficiency
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[0014] The synthetic technique of the leuprolide of the present embodiment comprises the following steps:
[0015] (1) Fmoc-Pro-HMPB-AM resin was obtained from Fmoc-Pro-OH and HMPB-AM resin with a substitution degree of 0.9 mmol / g as starting materials;
[0016] (2) The Fmoc-Pro-HMPB-AM resin was coupled one by one by the Fmoc / tBu solid-phase method to link amino acids with protective groups one by one, and the side chain fully protected leuprolide precursor peptide-HMPB-AM was synthesized resin;
[0017] (3) Cleavage of fully protected side chain leuprolide precursor peptide-HMPB-AM resin to obtain leuprolide precursor peptide with fully protected side chain;
[0018] (4) The side chain fully protected leuprolide precursor peptide was ethilated to obtain the side chain fully protected leuprolide;
[0019] (5) The leuprolide crude peptide is obtained by removing the side chain protecting group for fully protected leuprolide;
[0020] (6) The crude leuprolide peptide was sep...
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