Strophioblin, a novel rearranged dinor-diterpenoid from Strophioblachia fimbricalyx

Yang, Changshui; Jiang, Hou-Li; Mao, Haoyu; Zhang, Yue; Zhang, Yanyan; Dong, Xiaoyun

doi:10.1016/j.tet.2023.133331

Cited by 9 publications

(2 citation statements)

References 25 publications

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“…Although, research in recent years has produced relevant advances in the development of optical HSO 4 − and AcO − chemosensors based on different strategies, such as organic compounds containing amide, amine, phenol, hydrazone, pyrrole, urea, imidazole, flavone, triazole, indole and thiourea together with positively charged subunits (imidazolium, guanidinium, pyridinium) that are capable of providing H‐bond donors to recognize anions, these available organic chemosensors have some limitations such as low hydro‐stability, low water solubility, and insufficient selectivity or sensitivity [19–56] . Another strategy is based on the design of metal complex chemosensors, since the presence of the metal ion not only provides additional binding sites for the guest anion but also structurally pre‐organizes the binding sites for optimal anion‐binding via hydrogen bonding and metal ion coordination, resulting in a strong affinity when are compared to purely organic chemosensors [57–68] .…”

Section: Introductionmentioning

confidence: 99%

Sequential Recognition of Bisulfate and Acetate by a Ruthenium(II) Complex: Experimental and Theoretical Studies

Bazany‐Rodríguez,

García‐Rojas,

Guadalupe Hernández

et al. 2023

ChemPhotoChem

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New complex [RuLCl2(PPh3)] (L= N,N‐bis(2‐hydroxy‐5‐nitrobenzaldehyde)‐2,2’‐diaminodiethylamine) was prepared and characterized analytically. [RuLCl2(PPh3)] was employed as a luminescent chemosensor for the detection of anions. The results show that [RuLCl2(PPh3)] can detect HSO4 ̄ and AcO ̄ selectively with sequential order in H2O‐CH3CN (8:2, v/v) at pH 7.0. The spectral binding, titration, and interference analyses reveal that the addition of HSO4 ̄ to [RuLCl2(PPh3)] emits a distinguished fluorescence intensity (IF/I0= 6.55) significantly. This shows that HSO4 ̄ interacts suitably with the complex to switch ON the fluorescence which could be explained by inhibition of a PET mechanism as the above addition forms [RuLCl(HSO4)(PPh3)] in the excited state. Selectivity of [RuLCl2(PPh3)] with HSO4 ̄ forms [RuLCl(HSO4)(PPh3)] in the water showing a negligible change in its emission except for AcO ̄, which enhances fluorescence intensity. For the addition of AcO ̄ to [RuLCl2(PPh3)] forms [RuLCl(AcO)(PPh3)], however, the adding of HSO4 ̄ to [RuLCl(AcO)(PPh3)] does not show any change in the intensity, suggesting that there exists a logic gate function for the addition of HSO4 ̄ followed by AcO ̄ to [RuLCl2(PPh3)]. This finding is interesting because [RuLCl2(PPh3)] can act as a fast selective chemosensor for the sequential detection of HSO4 ̄ and AcO ̄.

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Section: Introductionmentioning

confidence: 99%

Sequential Recognition of Bisulfate and Acetate by a Ruthenium(II) Complex: Experimental and Theoretical Studies

Bazany‐Rodríguez,

García‐Rojas,

Guadalupe Hernández

et al. 2023

ChemPhotoChem

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“…Strophioblin 4 , from Strophioblachia fimbricalyx , is proposed to be formed by rearrangement of a dinorcleistanthane diterpenoid precursor. 4 The structure of hawanoid A 5 , a metabolite of marine-derived Paraconiothyrium hawaiiense , was established by X-ray analysis. 5 The biosynthetic pathway to the pentacyclic diterpenoid hawanoid A 5 is proposed to involve an intramolecular Diels–Alder cyclisation.…”

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confidence: 99%