“…= apparent, mc = multiplet centre, coupling constants J [Hz], signal integration. The following known compounds were isolated as pure samples and their characterisation data matched those of the reported compounds: 6 ,11a 4a ,30 7a – 7e ,30,31 8a – 8e ,32,33 9a – b 34 and 13 11a. The G‐I, G‐II and GH‐II catalysts were purchased from Aldrich.…”