S1 Studies on Taxadiene Synthase: Interception of the Cyclization Cascade at the Isocembrene Stage with GGPP Analogs. Siew Yin Chow, Howard J. Williams, Qiulong Huang, † Samik Nanda, † and A. Ian Scott.* Department of Chemistry, Texas A&M University, College Station, TX 77843-3255. scott@mail.chem.tamu.edu SUPPORTING INFORMATION List of Contents 1. General Remarks S2 2. Experimental Procedure S3 3. Spectra of Selected Compounds S18 4. Complete Citations S60