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We report a case of a 59-year-old female who experienced a history of an acute ST myocardial infarction. Percutaneous intervention and isosorbide dinitrate perfusion were successful in reversing the severe vasospasm on the left anterior descending, the first diagonal, and posterior interventricular arteries. The patient received calcium channel blockers and nitrates with a good in-hospital clinical evolution. One month later, the patient presented to the ED with chest pain leading to cardiac arrest despite cardiopulmonary resuscitation. This case highlights the fatal outcome of coronary artery vasospasm.

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In this work, we report on the catalytic activity of a manganese complex [(Cl)2Mn(RCOOET)], where RCOOET is ethyl-5-methyl-1-(((6-methyl-3-nitropyridin-2-yl)amino)methyl)-1H-pyrazole-3-carboxylate, in the oxidation of phenol or catechol by atmospheric oxygen to form o-quinone. The [(Cl)2Mn(RCOOET)] catalyzes the oxidation of catechol at a rate of 3.74 µmol L−1 min−1 in tetrahydrofuran (THF), in a similar manner to catecholase or tyrosinase.

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