The absolute configuration of the side-chain of aminobacteriohopanetriol has been determined as (32R, 33R, 34S) by n.m.r. spectroscopy of its 32,34-O-isopropylidene-N-acetyl derivative and by chemical correlation with bacteriohopanetetrol yielding an acetylenic bacteriohopane intermediate of potential synthetic value.
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Neunlist et al. (1988) studied this question.