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Research Article

Synthesis and characterisation of two novel proton transfer compounds and their inhibition studies on carbonic anhydrase isoenzymes

, , , , &
Pages 104-114 | Received 14 Dec 2009, Accepted 23 Feb 2010, Published online: 23 Sep 2010

Figures & data

Figure 1. Syntheses of compounds; (A) for 1, and (B) for 2.

Figure 1.  Syntheses of compounds; (A) for 1, and (B) for 2.

Table 1. Crystal data and structure refinement details for compounds 1 and 2.

Figure 2. The molecular structure and atomic labeling scheme of 1. Displacement ellipsoids are drawn at the 40% probability level.

Figure 2.  The molecular structure and atomic labeling scheme of 1. Displacement ellipsoids are drawn at the 40% probability level.

Figure 3. The molecular structure and atomic labeling scheme of 2. Displacement ellipsoids are drawn at the 40% probability level.

Figure 3.  The molecular structure and atomic labeling scheme of 2. Displacement ellipsoids are drawn at the 40% probability level.

Figure 4. SDS-PAGE analyses of CA isoenzymes: (a) Standard hCA I, (b) isolated hCA I, (c) Standard hCA II and (d) isolated hCA II.

Figure 4.  SDS-PAGE analyses of CA isoenzymes: (a) Standard hCA I, (b) isolated hCA I, (c) Standard hCA II and (d) isolated hCA II.

Figure 5. Ki graph obtained from in vitro studies for compound 1 on hCA II.

Figure 5.  Ki graph obtained from in vitro studies for compound 1 on hCA II.

Table 2. Selected bond distances (Å) and angles (°) for compounds 1 and 2.

Figure 6. FTIR spectra of en, Hsba, amp, compounds 1 and 2 (KBr).

Figure 6.  FTIR spectra of en, Hsba, amp, compounds 1 and 2 (KBr).

Figure 7. The TG-DTG and DTA curves of 1.

Figure 7.  The TG-DTG and DTA curves of 1.

Figure 8. The TG-DTG and DTA curves of 2.

Figure 8.  The TG-DTG and DTA curves of 2.

Table 3. Optical properties of compounds 1 and 2, and the free ligands amp and Hsba, in water and DMSO.

Figure 9. UV-Vis spectra of en, Hsba, amp, compounds 1 and 2; (A) in water, (B) in DMSO.

Figure 9.  UV-Vis spectra of en, Hsba, amp, compounds 1 and 2; (A) in water, (B) in DMSO.

Table 4. IC50 and Ki values of hCA-I and hCA-II isoenzyme hydratase and esterase activities after inhibition experiments.

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