This method described by Sinaÿ et al. can only debenzylate the α-isomer of 20 and led to compound 21 which was then phosphorylated using the dibenzyl phosphoramidite and subsequently oxidized to compound 22.
Wall, chilern, whar dar is so much racket dar must be somethin' out o' kilter. I thik dat 'twixt de niggers of de Souf and de womin at de Norf, all talkin' 'bout rights, de white men will be in a fix pretty soon.
They knew the lineage of all the boys and girls who crowded into old cracky wagons, rode four to a horse or footed it out to the lake.
Lennon let out a deep, proud burp after downing the beer.
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