96181-79-2Relevant academic research and scientific papers
TOTAL SYNTHESIS OF TYLONOLIDE, THE AGLYCONE OF THE 16-MEMBERED RING MACROLIDE TYLOSIN, FROM D-GLUCOSE. SELECTIVE APPLICATION OF MPM AND DMPM PROTECTING GROUPS FOR HYDROXY FUNCTIONS
Tanaka, Tatsuyoshi,Yuji, Oikawa,Hamada, Tatsuo,Yonemitsu, Osamu
, p. 3651 - 3654 (2007/10/02)
Segments i (C11-C17) and ii (C1-C10), synthesized from D-glucose by employing some stereoselective reactions and benzyl-type protecting groups, were esterified and cyclized to the 16-membered enone , which was readily converted to tylonolide, the aglycone
ON THE SELECTIVITY OF DEPROTECTION OF BENZYL, MPM (4-METHOXYBENZYL)AND DMPM (3,4-DIMETHOXYBENZYL) PROTECTING GROUPS FOR HYDROXY FUNCTIONS
Horita, Kiyoshi,Yoshikoa, Tadao,Tanaka, Tatsuyoshi,Oikawa, Yuji,Yonemitsu, Osamu
, p. 3021 - 3028 (2007/10/02)
The 4-methoxybenzyl (MPM) protecting group for hydroxy functions is readily removed with DDQ in dichloromethane containing a small amount of water at room temperature.Under these neutral conditions, several other protecting and functional groups remained unchanged. 3,4-Dimethoxybenzyl (DMPM groups are more reactive than MPM groups with DDQ.The benzyl (Bn) protecting group was removed by catalitic hydrogenation over Raney nickel.Selective deprotection of DMPM, MPM and Bn groups is also presented.
SELECTIVE HYDROGENOLYSIS OF THE BENZYL PROTECTING GROUP FOR HYDROXY FUNCTION WITH RANEY NICKEL IN THE PRESENCE OF THE MPM (4-METHOXYBENZYL) AND DMPM (3,4-DIMETHOXYBENZYL) PROTECTING GROUPS
Oikawa, Yuji,Tanaka, Tatsuyoshi,Horita, Kiyoshi,Yonemitsu, Osamu
, p. 5397 - 5400 (2007/10/02)
The benzyl protecting group for hydroxy function was selectively removed by catalytic hydrogenolysis with Raney nickel in the presence of the MPM (4-methoxybenzyl) and DMPM (3,4-dimethoxybenzyl) protecting groups, and applied to the synthesis of some synt
