Synthesis of phosphonosphingoglycolipid found in marine snail turbo cornutus

Isolation of New Ceramides from the Gorgonian Acabaria undulata

“…After drying with MgS04 and removing hexane under vacuum, final purification by silica hplc (15% EtOAc/hexane) gave 1.0 mg of a nonpolar compound as the major product. This compound was subjected to gc under standard conditions and was detected as pure methyl palmitate; eims mlz 270 (72), 239 (26), 227 (39), 213 (8), 199 (13), 185 (15), 171 (14), 149(33), 143 (37), 87 (89), 74 (100).…”

“…The molecular formula of C34H67N03 was deduced using a combination of eims and 13C-nmr data. The structure of this compound was determined as N-palmitoyloctadecasphinga-4(E)-ene by comparison of spectral data with compounds 1-3-A literature survey revealed that 4 has been isolated from beef spleen and synthesized by various methods (12)(13)(14)(15)(16). To determine the absolute stereochemistry of the asymmetric carbon centers at C-2 and C-3, 4 was synthesized following the methods described by Shibuya etal.…”

Synthesis of Azidosphingosine from D-Galactose or L-Arabinose

“…Similar report can also be found in literature. [20] According to a literature procedure, [14,18] compound 4a was initially converted to its triflate followed by substitution with NaN 3 in dimenthylformamide (DMF). To our surprise, beside the desired azido product 5, 38% yield of elimination product compound 6 was also obtained.…”

Phosphonated homopolymers and copolymers via ring opening metathesis polymerization: T g tuning, flame resistance, and photolithography

“…Arbuzov reaction was made in this step based on reference procedures . A round‐bottom flask equipped with a reflux condenser was charged with 1,2‐dibromoethane (5.515 mL, 64.00 mmol, 4.00 eq.)…”