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A proposed biosynthesis of the flinderoles described herein would produce racemic compounds through nonenzymatic dimerization of borrerine. However, an initial report of optical activity for natural flinderoles is inconsistent with that hypothesis as well as the racemic production of similar natural products. Herein, pure enantiomers of flinderole B were obtained and the specific rotations thereof...
Syntheses are reported for the novel P-chirogenic bicyclic prophosphatranes P(RNCH 2 CH 2 ) 2 N(OCH 2 CH 2 )—(8) in which the two R groups [i.e., 1-methylenenaphthyl and 1,2-methoxybenzyl (8)] and in its corresponding phosphine oxide (9) are different. Also synthesized was the transannulated protonated phosphatrane cation in the salt [HP(RNCH 2 CH ...
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