Crystal and molecular structure of a new diterpenyl glycoside from Pteris cretica L. |
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| Authors: | Jun'ichi Katakawa Tadahiro Tetsumi Tadamasa Terai Masaaki Katai Ken-ichi Sakaguchi Masami Kusunoki Mamoru Sato |
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| Affiliation: | (1) Faculty of Pharmaceutical Sciences, Setsunan University, 45-1 Nagaotoge-cho, Hirakata, Osaka, 573-0101, Japan;(2) Department of Applied Chemistry, Osaka Institute of Technology, Omiya, Asahi-ku, Osaka, Japan;(3) Institute for Protein Research, Osaka University, Yamadaoka, Suita, Osaka, Japan;(4) Graduate School of Integrated Science, Yokohama City University, Suehiro-cho, Tsurumi-ku, Yokohama, Japan |
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| Abstract: | The crystal and molecular structure of a new diterpenyl glycoside, Ptr-1, is presented. The crystal is triclinic, space group P1, with a = 8.2414(8) Å, b = 13.0826(9) Å, c = 6.1427(8) Å,  = 95.345(9)°,  = 111.589(8)°,  = 96.726(7)°, V = 604.9(1) Å3, Z = 1. The structure was solved by direct methods and refined by full-matrix least-squares methods to a final R = 0.049 (Rw = 0.099) for 1872 independent reflections. The molecular structure is based on a glycopyranosyl group and a tetracyclic group. The glycopyranosyl group is -D-allopyranosyl group. The tetracyclic group consists of 1 five-membered and 3 six-membered rings. |
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| Keywords: | Crystal and molecular structure new diterpenyl glycoside ![]("</a) /content/wtm1dlnuuhmtt9br/xxlarge946.gif" alt=" beta" align=" MIDDLE" BORDER=" 0" >-D-allopyranosyl group |
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