Post-Menopause: Critical Maintenance Postmenopausal women face the steepest bone loss trajectory while maintaining accelerated muscle loss rates
the inclusion body preparation involves resuspending of cell pellet in non-denaturing lysis buffer (Tris-HCl + Urea) by stirring and treating with lysozyme at room temperature
Patent CN105154498a example 10 discloses Arg34GLP-1 (9-37) main peptide chain is coupled with side chain with carboxyl protected by tert-butyl (tBu), then coupled with Boc-His (Boc) -Aib-OH dipeptide in presence of HATU and TEA, reaction time is as long as 14 days, freeze-drying time is as long as 16 hours after HPLC purification by post-treatment, which is not good for industrial production, and Boc has no strong absorption of Trt in ultraviolet, which is not good for reaction monitoring, and Boc has no good stability of Trt, which results in generation of racemic impurities
Step 4: Preparation of compound of formula-10 5% Pd-C (10 gm) was added to the filtrate obtained in step 3 at 25-30C
Step 6: Preparation of compound of formula-15a p-Nitro phenol compound of formula- 14a (4.9 gm) and HOBt (0.935 gm) were added to a solution of compound of formula- 13 (25 gm) in DCM (125 ml) at 25-30C
Drained out the solvent from the peptide flask and washed with DMF followed by methanol and dried to get the title compound
