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Gomes LR, Low JN, Turner AB, Nowicki AW, Baddeley TC, Wardell JL. Crystal structures and Hirshfeld surface analyses of a des-A-B-aromatic steroidal compound, and two of its derivatives, having a trans-2,3,4,5-tetrahydro-3 a-methyl-7-methoxybenz[ e]indane skeleton – structural comparisons with reported tetrahydrobenz[ e]indene derivatives. Zeitschrift für Naturforschung B 2019. [DOI: 10.1515/znb-2019-0094] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
Abstract
Abstract
The crystal structures and Hirshfeld surface analyses of the des-A-B-aromatic steroid derivative, (3a,9b)-1,2,3a,4,5,9b-hexahydro-7-methoxy-3a-methyl-3H-benz[e]-inden-3-one (or 5-methoxy-des-A-estra-5,7,9-triene-17-one) 1, its acetohydrazide derivative, 2, and its hydrazone derivative, 3, are reported. All three compounds crystallize in chiral space groups: compounds 1 and 2 in the orthorhombic space group P212121 each with one molecule in the asymmetric unit, and compound 3 in the monoclinic space group P21 with two similar but independent molecules, Mol A and Mol B, in the asymmetric unit. Both the five-membered and six-membered non-aromatic rings in all three compounds have envelope or near envelope shapes. In compounds 2 and 3 the N=N units have (E)-arrangements. The intermolecular interactions in crystals of compound 1 are C–H · · · O hydrogen bonds and C–H · · · π interactions, in compound 2 N–H · · · O and C–H · · · O hydrogen bonds and C–H · · · π interactions are present, while in compound 3 there are just C–H · · · π interactions. An important substructure in 1 is a sheet of molecules, composed of
R
6
6
(
44
)
${\rm{R}}_6^6(44)$
rings, formed from C–H · · · O(methoxy) and C–H · · · O(carbonyl) hydrogen bonds, the molecules of which form columns linked via the B and D rings, i.e. in a head-to-tail fashion. Compound 2 is an acylhydrazonyl compound, in which the two independent molecules are linked into asymmetric dimers via strong classical N–H · · · O hydrogen bonds, with the formation of
R
2
2
(
8
)
${\rm{R}}_2^2(8)$
rings. In both 1 and 2, further intermolecular interactions result in 3-dimensional structures, while compound 3 has a 1-dimensional structure arising from C–H · · · O interactions generating spiral chains. The results have been compared with existing data.
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Affiliation(s)
- Ligia R. Gomes
- FP-ENAS-Faculdade de Ciências de Saúde, Escola Superior de Saúde da UFP, Universidade Fernando Pessoa , Rua Carlos da Maia, 296 , P-4200-150 Porto , Portugal
- REQUIMTE, Departamento de Química e Bioquímica, Faculdade de Ciências da Universidade do Porto , Rua do Campo Alegre, 687 , P-4169-007 Porto , Portugal
| | - John N. Low
- Department of Chemistry , University of Aberdeen , Meston Walk , Old Aberdeen AB24 3UE , Scotland
| | - Alan B. Turner
- Department of Chemistry , University of Aberdeen , Meston Walk , Old Aberdeen AB24 3UE , Scotland
| | - Alexander W. Nowicki
- Department of Chemistry , University of Aberdeen , Meston Walk , Old Aberdeen AB24 3UE , Scotland
| | - Thomas C. Baddeley
- Department of Chemistry , University of Aberdeen , Meston Walk , Old Aberdeen AB24 3UE , Scotland
| | - James L. Wardell
- Department of Chemistry , University of Aberdeen , Meston Walk , Old Aberdeen AB24 3UE , Scotland
- Instituto de Tecnologia em Fármacos e Farmanguinhos, Fundação Oswaldo Cruz , 21041-250 Rio de Janeiro , RJ , Brazil
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