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Synthesis of CA-SS-Luc. tert-Butyldimethylsilylchloride (TBSCl), imidazole, dimethylformamide (DMF), reflux 10 h (a); LiAlH4, Et2O, 0°C to rt, 3 h (b); I2, PPh3, pyridine, CH2Cl2, 0°C to rt, 1 h (c); KSCN, acetone, rt, overnight (d); LiAlH4, Et2O, 0°C to rt, 5 h (e); Et3N, DMF, rt, 2 h (f); p-Toluenesulfonic acid (p-TsOH), MeOH, rt, overnight (g); d-cysteine, K2CO3, DCM, MeOH, H2O, rt, 5 min (h).
