| http://www.w3.org/ns/prov#value | - This debenzylated compound can then be alkylated with an allyl or a lower alkyl halide, or alternatively it may be reductively alkylated using acetaldehyde, propionaldehyde etc. with sodium cyanoborohydride.Compounds according to Formula I above in which R.sup.3 is other than H are prepared according to a slightly different, but comparable, synthetic route illustrated in Reaction Scheme II below.
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