TY - GEN AU - Markezich,R L AU - Willy,W E AU - McCarry,B E AU - Johnson,W S TI - Direct formation of the steroid nucleus by a nonenzymic biogenetic-like cyclization. Preparation of the cyclization substrate SN - 0002-7863 PY - 1973///0803 KW - Cyclization KW - Methods KW - Models, Structural KW - Stereoisomerism KW - Steroids KW - chemical synthesis KW - Structure-Activity Relationship N1 - Publication Type: Journal Article UR - https://doi.org/10.1021/ja00794a044 ER -