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31 results

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Page 1
Concerted nucleophilic aromatic substitutions.
Kwan EE, Zeng Y, Besser HA, Jacobsen EN. Kwan EE, et al. Nat Chem. 2018 Sep;10(9):917-923. doi: 10.1038/s41557-018-0079-7. Epub 2018 Jul 16. Nat Chem. 2018. PMID: 30013193 Free PMC article.
The KIE measurements were made possible by a new technique that leverages the high sensitivity of (19)F as an NMR nucleus to quantitate the degree of isotopic fractionation. This sensitive technique permits the measurement of KIEs on 10 mg of natural abundance mater …
The KIE measurements were made possible by a new technique that leverages the high sensitivity of (19)F as an NMR nucleus to quantita …
Radiomics of Tumor Heterogeneity in (18)F-FDG-PET-CT for Predicting Response to Immune Checkpoint Inhibition in Therapy-Naive Patients with Advanced Non-Small-Cell Lung Cancer.
Ventura D, Schindler P, Masthoff M, Görlich D, Dittmann M, Heindel W, Schäfers M, Lenz G, Wardelmann E, Mohr M, Kies P, Bleckmann A, Roll W, Evers G. Ventura D, et al. Cancers (Basel). 2023 Apr 14;15(8):2297. doi: 10.3390/cancers15082297. Cancers (Basel). 2023. PMID: 37190228 Free PMC article.
We aimed to evaluate the predictive and prognostic value of baseline (18)F-FDG-PET-CT (PET-CT) radiomic features (RFs) for immune checkpoint-inhibitor (CKI)-based first-line therapy in advanced non-small-cell lung cancer (NSCLC) patients. ...
We aimed to evaluate the predictive and prognostic value of baseline (18)F-FDG-PET-CT (PET-CT) radiomic features (RFs) for immune che …
Protodeboronation of (Hetero)Arylboronic Esters: Direct versus Prehydrolytic Pathways and Self-/Auto-Catalysis.
Hayes HLD, Wei R, Assante M, Geogheghan KJ, Jin N, Tomasi S, Noonan G, Leach AG, Lloyd-Jones GC. Hayes HLD, et al. J Am Chem Soc. 2021 Sep 15;143(36):14814-14826. doi: 10.1021/jacs.1c06863. Epub 2021 Aug 30. J Am Chem Soc. 2021. PMID: 34460235
The kinetics and mechanism of the base-catalyzed hydrolysis (ArB(OR)(2) ArB(OH)(2)) and protodeboronation (ArB(OR)(2) ArH) of a series of boronic esters, encompassing eight different polyols and 10 polyfluoroaryl and heteroaryl moieties, have been investigated by in situ and …
The kinetics and mechanism of the base-catalyzed hydrolysis (ArB(OR)(2) ArB(OH)(2)) and protodeboronation (ArB(OR)(2) ArH) of a series o …
The Transition-State Structure for Human MAT2A from Isotope Effects.
Firestone RS, Schramm VL. Firestone RS, et al. J Am Chem Soc. 2017 Oct 4;139(39):13754-13760. doi: 10.1021/jacs.7b05803. Epub 2017 Sep 20. J Am Chem Soc. 2017. PMID: 28880543 Free PMC article.
We used kinetic isotope effect (KIE), commitment factor (C(f)), and binding isotope effect (BIE) measurements combined with quantum mechanical (QM) calculations to solve the transition state structure of human MAT2A. ...Interaction of MAT2A with its MAT2B regulatory subuni …
We used kinetic isotope effect (KIE), commitment factor (C(f)), and binding isotope effect (BIE) measurements combined with quantum m …
The mechanism of base-promoted HF elimination from 4-fluoro-4-(4'-nitrophenyl)butan-2-one: a multiple isotope effect study including the leaving group (18)F/(19)F KIE.
Ryberg P, Matsson O. Ryberg P, et al. J Am Chem Soc. 2001 Mar 28;123(12):2712-8. doi: 10.1021/ja002513b. J Am Chem Soc. 2001. PMID: 11456956
The elimination was studied for formate, acetate, and imidazole as the catalyzing base. The fluorine KIEs were determined using the accelerator-produced short-lived radionuclide (18)F in combination with natural (19)F. ...The size of the fluorine KIEs …
The elimination was studied for formate, acetate, and imidazole as the catalyzing base. The fluorine KIEs were determined using the a …
The first multicentre study on coronary anomalies in the Netherlands: MuSCAT.
Koppel CJ, Driesen BW, de Winter RJ, van den Bosch AE, van Kimmenade R, Wagenaar LJ, Jukema JW, Hazekamp MG, van der Kley F, Jongbloed MRM, Kiès P, Egorova AD, Verheijen DBH, Damman P, Schoof PH, Wilschut J, Stoel M, Speekenbrink RGH, Voskuil M, Vliegen HW. Koppel CJ, et al. Neth Heart J. 2021 Jun;29(6):311-317. doi: 10.1007/s12471-021-01556-9. Epub 2021 Mar 8. Neth Heart J. 2021. PMID: 33683666 Free PMC article.
Isotopic Fractionation and Kinetic Isotope Effects of a Purified Bacterial Nitric Oxide Reductase (NOR).
Rivett ED, Finders CM, Haslun JA, Gandhi H, Kahle M, Ädelroth P, Ostrom PH, Ostrom NE, Hegg EL. Rivett ED, et al. Biochemistry. 2025 Oct 21;64(20):4327-4340. doi: 10.1021/acs.biochem.5c00417. Epub 2025 Oct 10. Biochemistry. 2025. PMID: 41069220 Free PMC article.
We also calculated delta(15)N(SP), the KIEs, and associated isotopic enrichment factors (epsilon) for N(bulk), N(alpha), and N(beta). ...Values of delta(18)O increased with N(2)O production (slope of delta(18)O against [-f ln f/(1 - f)] = -19.9 1.9 ) …
We also calculated delta(15)N(SP), the KIEs, and associated isotopic enrichment factors (epsilon) for N(bulk), N(alpha), and N(beta). …
Predicting response and survival to first-line treatment with baseline [(18)F]FDG-PET-CT in patients with small-cell lung cancer: an integrated diagnostic approach.
Ventura D, Schindler P, Kies P, Bleckmann A, Mohr M, Lenz G, Schäfers M, Roll W, Evers G. Ventura D, et al. Ther Adv Med Oncol. 2025 Oct 1;17:17588359251379665. doi: 10.1177/17588359251379665. eCollection 2025. Ther Adv Med Oncol. 2025. PMID: 41049586 Free PMC article.
OBJECTIVES: The aim of this study was to predict early disease progression and survival using CT-based radiomic features (RF), integrating [(18)F]FDG-PET-CT and clinical parameters. DESIGN: This retrospective pilot study included 62 patients with non-metastatic and metasta …
OBJECTIVES: The aim of this study was to predict early disease progression and survival using CT-based radiomic features (RF), integrating [ …
31 results