| http://www.w3.org/ns/prov#value | - thods [for example by treating with piperidine in DMF], to produce the corresponding compound of formula (XXXVII). [0189] The compound of formula (XXXVII) is reacted with a suitably substituted aldehyde of formula (XXX), wherein R1A is as previously defined, in the presence of a reducing agent such as sodium cyanoborohydride, and the like, under dehydrating conditions, for example in an acid alcoh
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