“…Elemental analyses were performed at the ICSN (microanalytical service). Compounds 14a, [35,36] 14b, [36] 17a, [7f] 17b, [7f,37] 17c, [7f,12g,38] 17d, [12g] 17f, [12g] 17h, [38] 17i, [39] 17j, [40] 17k, [12f] 17l, [41] 18k, [12f] 20c, [42] 20e, [43] 20f, [37] 20i, [43,44] 20j, [42,35b] and 20k [35b] have previously been described in the literature. 0.088 mmol).…”