prov:value
| - ch as 1-ethoxyethyl and methoxymethyl, thioesters, or thiocarbonates; amine protecting group includes, but is not limited to, carbamates, for example, 2,2,2-trichloroethylcarbamate or tertbutylcarbamate; and hydroxy protecting group includes, but is not limited to, ethers such as methyl, t-butyl, benzyl, p-methoxybenzyl, p-nitrobenzyl, allyl, trityl, methoxymethyl, 2-methoxypropyl, methoxyetho
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