The Crystal and Molecular Structure of 1-(2-Amino-4-pyrimidinyl)-β-carboline**

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Title:	The Crystal and Molecular Structure of 1-(2-Amino-4-pyrimidinyl)-β-carboline**
Authors:	Yoshinobu Yokomori Kiyotane Sekido Tian-Shung Wu Hsien-Ju Yien Sakutaro Hirokawa
Date:	1983
Issue Date:	2012-11-16 09:01:48 (UTC+8)
Abstract:	An alkaloid extracted from a small evergreen tree, Annona montata, was identified as 1-(2-amino-4-pyrim-idinyl)-β-carboline monohydrate by the X-ray method. The crystal data are; a=20.699, b=4.453, c=15.720A, and β=112.160; space group, P21/c; Z=4. The structure was solved by the direct method and refined by the least-squares method to the final R value of 0.109 for 1451 independent reflections. The water molecule is connected to four nitrogen atoms by hydrogen bonds. Two of them are in different groups; one is in the five-membered ring of the β-carboline skelton, and the other is in the pyridine of the β-carboline skelton. The fifth hydrogen bond connects two nitrogen atoms, one of which is in the amino group, and the other, in the py-rimidine skelton.
Relation:	嘉南學報 9, A52
Appears in Collections:	[Chna Nan Annual Bulletin] Vol.9 (1983)

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