Tri‐3,4‐dimethoxycinnamoyl‐1,5‐γ‐quinide was synthesized and fully characterized by a direct synthesis from quinic acid and a large excess of 3,4‐dimethoxycinnamoyl chloride. Mono‐ and di‐3,4‐dimethoxycinnamoyl‐1,5‐γ‐quinides were also obtained from the direct coupling of 1,5‐γ‐quinide and 3,4‐dimethoxycinnamoyl chloride in different molar ratios. Moreover, a hypothetical mechanism of the direct lactonization is proposed.

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Results of biochemical tests of 172 patient data (among them 84 men data and 88 women data, resp.) before and after administration of statins were studied. All monitored patients are characterized by lipoprotein metabolism failure or other kind of lipidaemia. The calculations were performed using several chemometrical methods pursuing visualization of most important biochemical parameters and classification of the patient blood samples by means of up-to-date software packages. The dependences of the content of most common biochemical parameters upon the treatment of patients by statins were elucidated in detail.