for the following products
tert-Butyl (1S,3S)-1-((2S,4S)-4-isopropyl-5-oxotetrahydrofuran-2-yl)-3-(4-methoxy-3-(3-methoxypropoxy)benzyl)-4-methylpentylcarbamate and [(1S,3S)-3-[[4-methoxy-3-(3-methoxypropoxy)phenyl]methyl]-4-methyl-1-[(2S, 4S)-tetrahydro-4-(1-methylethyl)-5-oxo-2-furanyl]pentyl]carbamic acid 1,1-tert-butyl ester