Skip to main content
padlock icon - secure page this page is secure

Open Access Crystal structures of (±)-(1SR,5SR,6SR,7SR,10SR,11SR,13RS,14SR)-13-hydroxy-7-methoxymethoxy-11,15,18,18-tetramethyl-3-oxo-2,4-dioxatetracyclo[,5.06,11]octadec-15-en-10-yl benzoate, its 13-epimer and 13-one derivative

Download Article:

The full text article is available externally.

The article you have requested is supplied via the DOAJ. View from original source.

The title compounds, C29H38O8·0.25C5H12, (A), C29H38O8, (B), and C29H36O8, (C), are tetracyclic benzoates possessing a taxane skeleton with a fused dioxolane ring as the core structure. In the asymmetric unit of (A), there are two independent benzoate molecules (A and A′) and a half molecule of solvent pentane disordered about an inversion center. The molecular conformations of (A), (B) and (C) are similar except for the flexible methoxymethoxy group. The cyclohexane, cyclohexene and central cyclooctane rings adopt chair, half-chair and chair–chair (extended crown) forms, respectively. The dioxolane rings are essentially planar, while the dioxolane ring of A′ is slightly twisted from the mean plane. In the crystal of (A), intermolecular O—H...O, C—H...O and C—H...π interactions link the independent benzoates alternately, forming a chain structure. In the crystals of (B) and (C), molecules are linked through O—H...O and C—H...π interactions, and C—H...O hydrogen bonds, respectively, into similar chains. Further, weak intermolecular C—H...O interactions connect the chains into a three-dimensional network in (A) and a sheet in (B), whereas no other interactions are observed for (C).
No References
No Citations
No Supplementary Data
No Article Media
No Metrics

Document Type: Research Article

Affiliations: 1: School of Medicine, Keio University, Hiyoshi 4-1-1, Kohoku-ku, Yokohama 223-8521, Japan 2: Department of Applied Chemistry, Faculty of Science and Technology, Keio University, Hiyoshi 3-14-1, Kohoku-ku, Yokohama 223-8522, Japan

Publication date: January 1, 2015

  • Access Key
  • Free content
  • Partial Free content
  • New content
  • Open access content
  • Partial Open access content
  • Subscribed content
  • Partial Subscribed content
  • Free trial content
Cookie Policy
Cookie Policy
Ingenta Connect website makes use of cookies so as to keep track of data that you have filled in. I am Happy with this Find out more