title: Studies in the Total Synthesis of Heliquinomycinone: Proof of Concept and Assembly of a Fully Mature Spirocyclization Precursor This work was supported by the National Institutes of Health (Grant numbers: AI 16943 and HL25848). A Postdoctoral Fellowship is gratefully acknowledged by R.X.R. (NIH, Grant Number IF32EY06750-0181). The authors thank Dr. Daniel Chen for important initial experiments, Dr. Brian Bridgewater and Prof. Ged Parkin of Columbia University for X-ray crystal structure analysis of 11 a, and Yashuiro Itagaki for high-resolution mass spectral analyses.
authors.affiliation: Department of Chemistry, Columbia University Havemeyer Hall, New York, NY, 10021 (USA).
authors.forename: Donghui
authors.initials: D
authors.lastname: Qin
authors.forename: Rex X.
authors.initials: RX
authors.lastname: Ren
authors.forename: Tony
authors.initials: T
authors.lastname: Siu
authors.forename: Changsheng
authors.initials: C
authors.lastname: Zheng
authors.forename: Samuel J.
authors.initials: SJ
authors.lastname: Danishefsky