Refined Crystal and Molecular Structure of Andrographolide — Diterpene | Zendy

Sambyal Vinod Singh | Zendy; Goswami K. N. | Zendy

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Refined Crystal and Molecular Structure of Andrographolide — Diterpene

Author(s) -

Sambyal Vinod Singh,

Goswami K. N.

Publication year - 1995

Publication title -

crystal research and technology

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 0.377

H-Index - 64

eISSN - 1521-4079

pISSN - 0232-1300

DOI - 10.1002/crat.2170300508

Subject(s) - andrographolide , monoclinic crystal system , crystal structure , crystallography , diterpene , ring (chemistry) , hydrogen bond , chemistry , crystal (programming language) , stereochemistry , molecule , organic chemistry , computer science , programming language

A refined crystal structure of andrographolide has been obtained by X‐ray anaysis using CuKα radiation. It crystallizes in the monoclinic crystal system with unique b ‐axis in space group P2 1 . The unit cell parameters are a = 6.552(2) Å, b = 8.009(1) Å, c = 17.989(1) Å and interaxial angle β = 97.32(1)°. The structure has been solved by direct methods and was refined up to R = 0.041, ωR = 0.0464. Both the cyclohexane rings are in chair conformation with the furan ring in twist conformation. The crystal structure is stabilized by hydrogen bonding.

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