1: (tributylstannyl)methyl 2,4,6-triisopropylbenzoate With n-butyllithium in tetrahydrofuran; hexane T=-78°C; 0.0833333 h; Inert atmosphere; 2: heptanal in tetrahydrofuran; hexane T=-78°C; 0.166667 h; Inert atmosphere; 3: carbon disulfide; methyl iodide Further stages;

1: C29H51(2)HO2Sn With n-butyllithium in tetrahydrofuran; hexane T=-78°C; 0.0833333 h; Inert atmosphere; 2: heptanal in tetrahydrofuran; hexane T=-78°C; 0.166667 h; Inert atmosphere; 3: carbon disulfide; methyl iodide optical yield given as percent eeFurther stages;

1: (tributylstannyl)methyl 2,4,6-triisopropylbenzoate With n-butyllithium; N,N,N',N,-tetramethylethylenediamine in diethyl ether; hexane T=-78°C; 0.05 h; Inert atmosphere; 2: benzyl bromide in diethyl ether; hexane T=-78°C; 0.5 h; Inert atmosphere; 3: With water; sodium hydrogencarbonate in diethyl ether; hexane

1: With n-butyllithium; N,N,N',N,-tetramethylethylenediamine in diethyl ether; hexane T=-78°C; 0.05 h; Inert atmosphere; 2: With methanol in diethyl ether; hexane

1: (tributylstannyl)methyl 2,4,6-triisopropylbenzoate With n-butyllithium in tetrahydrofuran; hexane T=-78°C; 0.0833333 h; Inert atmosphere; 2: (3aR,5S,6S,6aR)-6-(benzyloxy)-tetrahydro-2,2-dimethylfuro[2,3-d][1,3]dioxol-5-carbaldehyde in tetrahydrofuran; hexane T=-78°C; 0.5 h; Inert atmosphere; 3: With water; sodium hydrogencarbonate in tetrahydrofuran; hexane T=-78°C; Inert atmosphere; optical yield given as percent de;

sulfuric acid