Division of Chemistry and Materials Science, Graduate School of Engineering, Nagasaki University, 1-14 Bunkyo-machi, Nagasaki 852-8521 ... Received August 12, 2011 E-mail: iwao@nagasaki-u.ac.jp ... A concise total synthesis of non-steroidal estrogen receptor antagonists R1128 AD (1a1d) has been achieved using iterative ortho-lithiation of 2-(4-methoxyphenyl)-4 ,4- dimethyloxazoline (3) as the key reaction. ... Tamoxifen, a non-steroidal estrogen ...