1H–15N HMBC spectra of C18-diterpenoid alkaloids

For short-term sustainable applications such as packaging and agriculture, new biodegradable and renewable macromolecular architectures based on polysaccharide and polyester have been developed with an original multistep pathway and then characterized. In a first step, amylomaize starch (AMS), based on rather linear polysaccharides with very high amylose content, and poly(butylene adipate-co-terephthalate) (PBAT), a potentially fully biobased and biodegradable copolyester, were chemically modified. Reactive maleimide and thiol groups were added to their chemical structures. They then underwent a thiol-Michael addition, yielding a cross-linked network based on AMS and PBAT oligomers. In this large study, the structures of the different AMS and PBAT derivatives were precisely determined by FTIR, 1 H, 13 C APT and 31 P NMR. Nitrogen-containing products were also analyzed by 1 H− 15 N NMR, a useful but largely underutilized tool, to determine the chemical structures of these synthesized products. This study clearly shows the high potential of these macromolecular architectures based on AMS and PBAT obtained by a fast click reaction to develop reactive additives in the case of rather incompatible multiphase materials (blends, multilayers) for a large range of short-term and demanding applications (packaging, agriculture) for a greener future.

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Multi-conformers caused by conformational change of A-ring in the C₁₈- and C₁₉-N-dealkyl diterpenoid alkaloids

Jian

Tang

Liu

et al. 2023

Journal of Asian Natural Products Research

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1H–15N HMBC spectra of C18-diterpenoid alkaloids

Cited by 3 publications

References 9 publications

New C20-diterpenoid alkaloids from Aconitum sinomontanum

New C20-diterpenoid alkaloids from Aconitum sinomontanum

Synthesis by Fast Thiol-Michael Click Addition of Biodegradable and Potentially Fully Biobased Architectures Based on Starch and Polyester, Toward Sustainable and Performing Multiphase Systems

Multi-conformers caused by conformational change of A-ring in the C₁₈- and C₁₉-N-dealkyl diterpenoid alkaloids

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1H–15N HMBC spectra of C18-diterpenoid alkaloids

Cited by 3 publications

References 9 publications

New C20-diterpenoid alkaloids from Aconitum sinomontanum

New C20-diterpenoid alkaloids from Aconitum sinomontanum

Synthesis by Fast Thiol-Michael Click Addition of Biodegradable and Potentially Fully Biobased Architectures Based on Starch and Polyester, Toward Sustainable and Performing Multiphase Systems

Multi-conformers caused by conformational change of A-ring in the C18- and C19-N-dealkyl diterpenoid alkaloids

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Multi-conformers caused by conformational change of A-ring in the C₁₈- and C₁₉-N-dealkyl diterpenoid alkaloids