Methods of analyzing cucurbitacins in cucumbers
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Terpenoids—IV : The nuclear magnetic resonance study of methyl group signals in the cucurbitanes
Abstract The methyl group region in the NMR spectra of several cucurbitane derivatives have been studied.
Catalytic removal of tert-butyldimethylsilyl (TBS) ether by PVP-I
Abstract A mild, efficient and rapid protocol the deprotection of alcoholic TBDMS ethers using PVP-1 as catalyst in methanol, the procedure of deprotection of various TBDMS ethers were found to be very convenient, easy work-up, high yielding.