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. Author manuscript; available in PMC: 2013 Jun 1.
Published in final edited form as: Bioorg Med Chem Lett. 2012 Apr 13;22(11):3739–3742. doi: 10.1016/j.bmcl.2012.04.023

Scheme 1.

Scheme 1

Synthesis of Tetrahydroisoquinoline Analogs

Reagents and Conditions: (a) RCOCl, TEA, CH2Cl2; (b) RSO2Cl, pyr, CH2Cl2; (c) RNCO, toluene; (d) ClCO2R, DIEA, CH2Cl2; (e) RCHO, NaBH(OAc)3, ClCH2CH2Cl.