title: Myrtenal, a controversial molecule for the proper application of the CIP Sequence Rule for multiple bonds.
abstract: This communication highlights the need of building hierarchical digraphs for the unequivocal assignment of stereochemical descriptors of (-)-myrtenal, a naturally-occurring oxygenated monoterpene whose absolute configuration (AC) is sometimes misrepresented in its structural formulae. Differentiation between duplicated atoms and phantom atoms for the proper application of the sequence rules is shown to be an essential step to get a proper construction of hierarchical digraphs.
authors.affiliation: Departamento de Química Orgánica, Escuela Nacional de Ciencias Biológicas, Instituto Politécnico Nacional, Carpio y Plan de Ayala, Col. Santo Tomás, México, D. F., 11340 México.
authors.forename: L Gerardo
authors.initials: LG
authors.lastname: Zepeda
authors.forename: Eleuterio
authors.initials: E
authors.lastname: Burgueño-Tapia
authors.forename: Pedro
authors.initials: P
authors.lastname: Joseph-Nathan
mesh_terms: D000081008:Bicyclic Monoterpenes; D008968:Molecular Conformation; D013729:Terpenes / Q000737:chemistry*
chemical_list: D000081008:Bicyclic Monoterpenes; D013729:Terpenes; C061545:myrtenal