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1,4a,7-Trimethyl-7-vinyl-1,2,3,4,4a,4b,5,6,7,8,10,10a-dodeca-hydro-phenanthrene-1-carboxylic acid.

ABSTRACT: The title compound, also known as isopimaric acid, C(20)H(30)O(2), was isolated from slash pine rosin. There are two unique mol-ecules in the unit cell. The two cyclo-hexane rings have classical chair conformations. The cyclo-hexene ring represents a semi-chair. The mol-ecular conformation is stabilized by weak intra-molecular C-H?O hydrogen-bonding inter-actions. The mol-ecules are dimerized through their carboxyl groups by O-H?O hydrogen bonds, forming R(2) (2)(8) rings.

SUBMITTER: Zhao ZD

PROVIDER: S-EPMC2969610 | biostudies-literature | 2009 May

REPOSITORIES: biostudies-literature

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1,4a,7-Trimethyl-7-vinyl-1,2,3,4,4a,4b,5,6,7,8,10,10a-dodeca-hydro-phenanthrene-1-carboxylic acid.

Zhao Zhen-Dong ZD Chen Yu-Xiang YX Wang Yu-Min YM Bi Liang-Wu LW

Acta crystallographica. Section E, Structure reports online 20090529 Pt 6

The title compound, also known as isopimaric acid, C(20)H(30)O(2), was isolated from slash pine rosin. There are two unique mol-ecules in the unit cell. The two cyclo-hexane rings have classical chair conformations. The cyclo-hexene ring represents a semi-chair. The mol-ecular conformation is stabilized by weak intra-molecular C-H⋯O hydrogen-bonding inter-actions. The mol-ecules are dimerized through their carboxyl groups by O-H⋯O hydrogen bonds, forming R(2) (2)(8) rings. ...[more]

PMID: 21583270

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1,4a,7-Trimethyl-7-vinyl-1,2,3,4,4a,4b,5,6,7,9,10,10a-dodeca-hydro-phenanthrene-1-carboxylic acid.

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