Rutledge KM, Griesbach C, Mercado BQ, Peczuh MW. Structures of three disubstituted [13]-macro-di-lac-tones reveal effects of substitution on macrocycle conformation.
Acta Crystallogr E Crystallogr Commun 2020;
76:1617-1623. [PMID:
33117575 PMCID:
PMC7534246 DOI:
10.1107/s2056989020012037]
[Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/20/2020] [Accepted: 08/31/2020] [Indexed: 11/18/2022]
Abstract
The synthesis and crystal structures of three new disubstituted [13]-macro-di-lactones, namely, trans-4,8-dimethyl-1,10-dioxa-cyclo-tridec-5-ene-2,9-dione, C13H20O4, I, cis-4-(4-bromo-phen-yl)-13-methyl-1,10-dioxa-cyclo-tridec-5-ene-2,9-dione C18H21BrO4, II, and trans-11-methyl-4-phenyl-1,10-dioxa-cyclo-tridec-5-ene-2,9-dione, C18H22O4, III, are reported and their conformations are put in the context of other [13]-macrodilactone structures reported previously. Together, they show that the number, location, and relative disposition of groups attached at the termini of planar units of the [13]-macrodilactones subtly influence their aspect ratios.
Collapse