Related Experiment Video
Updated: Jun 1, 2026

Preparation and In Vivo Use of an Activity-based Probe for N-acylethanolamine Acid Amidase
Published on: November 23, 2016
N-Benzyl-idenenordehydro-abietylamine
Xiao-Ping Rao1, Yong Wu, Zhan-Qian Song
1Institute of Chemical Industry of Forest Products, Chinese Academy of Forestry, Nanjing 210042, People's Republic of China.
Researchers synthesized a novel octahydro-phenanthrene derivative, (1R,4aS,10aR,E)-N-benzyl-idene-7-isopropyl-1,4a-dimethyl-1,2,3,4,4a,9,10,10a-octa-hydro-phenanthren-1-amine). This study details its chemical structure and synthesis.
Area of Science:
- Organic Chemistry
- Stereochemistry
- Crystallography
Background:
- The synthesis of complex polycyclic amine structures is crucial in medicinal chemistry.
- Nor-dehydro-abietylamine provides a chiral scaffold for developing new molecular architectures.
Purpose of the Study:
- To synthesize and characterize a novel octahydro-phenanthrene derivative.
- To elucidate the stereochemical properties and conformational analysis of the synthesized compound.
Main Methods:
- Chemical synthesis involving the reaction of nor-dehydro-abietylamine with benzaldehyde.
- X-ray crystallography for determining the precise three-dimensional structure.
- Conformational analysis of the cyclo-hexane rings and the tricyclic system.
Main Results:
- Successful synthesis of (1R,4aS,10aR,E)-N-benzyl-idene-7-isopropyl-1,4a-dimethyl-1,2,3,4,4a,9,10,10a-octa-hydro-phenanthren-1-amine).
- The compound exhibits a trans ring junction with specific chair and half-chair conformations.
- The dihedral angle between the aromatic rings was determined to be 44.2(4)°, and the C=N bond has an E configuration.
Conclusions:
- The synthesis yielded a well-defined octahydro-phenanthrene derivative with specific stereochemistry.
- The structural analysis provides insights into the conformational preferences of this class of compounds.
- This work contributes to the understanding of stereoselective synthesis and structural characterization in organic chemistry.
Related Concept Videos
Adrenergic Agonists: Chemistry and Structure-Activity Relationship
Aromatic ring substitutions: Substituting the aromatic ring with –OH groups at positions 3 and 4 yields catecholamines (e.g., epinephrine), which have a high affinity for adrenoceptors. Hydrogen bonding between –OH groups and receptors enhances adrenergic activity.
Separation of the aromatic...
Diazonium Group Substitution: –OH and –H
Preparation of Amines: Reductive Amination of Aldehydes and Ketones
Amines to Amides: Acylation of Amines
Next, the second equivalent of amine serves as a Brønsted base and deprotonates the quaternary amide...
Electrophilic Aromatic Substitution: Nitration of Benzene
Nomenclature of Aryl and Heterocyclic Amines

