From e02105cea5b7e652634bfae5ca9f58ae8d7e41ea Mon Sep 17 00:00:00 2001 From: ggserver Date: Tue, 26 Sep 2023 19:59:57 +0000 Subject: [PATCH] Add updates up until 2023-09-26 19:54:53 --- .../87/038887E3FFC16E0892524F3EFE846C72.xml | 94 +++++++++++++++++++ 1 file changed, 94 insertions(+) create mode 100644 data/03/88/87/038887E3FFC16E0892524F3EFE846C72.xml diff --git a/data/03/88/87/038887E3FFC16E0892524F3EFE846C72.xml b/data/03/88/87/038887E3FFC16E0892524F3EFE846C72.xml new file mode 100644 index 00000000000..a9ab9ee0f6b --- /dev/null +++ b/data/03/88/87/038887E3FFC16E0892524F3EFE846C72.xml @@ -0,0 +1,94 @@ + + + +Spirornatas A-C from brown alga Turbinaria ornata: Anti-hypertensive spiroketals attenuate angiotensin-I converting enzyme + + + +Author + +Chakraborty, Kajal +*, Shubhajit Dhara & Marine Bioprospecting Section of Marine Biotechnology Division, Central Marine Fisheries Research Institute, Ernakulam North, P. B. No. 1603, Cochin, India + + + +Author + +Dhara, Shubhajit + +text + + +Phytochemistry + + +2022 + +113024 + + +2022-03-31 + + +195 + + +1 +10 + + + + +http://dx.doi.org/10.1016/j.phytochem.2021.113024 + +journal article +58680 +10.1016/j.phytochem.2021.113024 +05f95d8a-c92f-423f-8517-ffa0fa7af90c +1873-3700 +8194471 + + + + + + +2.3. Bioactive potentials of the spiroketals isolated from +T. ornata + + + + + + +Spirornata A showed noticeably greater ACE-I inhibitory property (IC +50 +4.55 μM) compared to those exhibited by spirornata B (IC +50 +4.72 μM) and C (IC +50 +4.86 μM), as well as comparable activity with the standard ACE-I inhibitor, captopril (IC +50 +4.29 μM) ( +Table 2 +). The electronegative groups in the oxodecahydrospiro [furo-3,4-c] pyran-7, 2 +ʹ +- pyranyl framework along with the esterified side chain in spirornata A could evidently +form hydrogen +bonding interfaces with the aminoacyl residues in the active site of ACE-I, and might form co-ordinate bond with the binding site Zn +2+ +ion. Conspicuously greater number of electronegative centers in spirornata A might lead to its greater antihypertensive activity. Also, free radical quenching activities (IC +50DPPH +1.14 and IC +50ABTS +1.28 mM) exhibited by spirornata A were greater when compared to those exhibited by other analogues (IC +50 +1.25–1.71 mM) and commercially available standard (IC +50 +1.46–1.69 mM). Previoius reports of antioxidant activities of spiroketals ( +Zhuravleva et al., 2014 +) also corroborated the antioxidant activities of currently isolated spiroketals. + + + + \ No newline at end of file