You'll need to form the 6-oxabicyclo[3.2.1]octane ring system. This could involve a cyclization reaction, such as an intramolecular Diels-Alder reaction or another suitable method.
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Phenol, 2,5-bis(phenylmethoxy)-, benzoate
Methyl (Z)-2-(phenylselanylcarbonylethyl)cyclohexylideneacetate
methyl (E)-3-<(2R*,3S*)-2,3-dihydro-2-(4-hydroxy-3-methoxyphenyl)-3-hydroxymethyl-7-methoxy-1-benzofuran-5-yl>propenoate
daphneticin
Benzoic acid (2R,4R,5S,6S)-4-(bis-ethylsulfanyl-methyl)-6-[(R)-(tert-butyl-diphenyl-silanyloxy)-methylcarbamoyl-methyl]-2-(4-methoxy-phenyl)-[1,3]dioxan-5-yl ester
(2R,3S,4R)-3,4-dihydroxy-2-(hydroxymethyl)pyrrolidine hydrochloride
2,2-Dimethyl-propionic acid 2,4,4-trimethyl-3-oxo-5-[1-triisopropylsilanyloxy-meth-(E)-ylidene]-cyclohex-1-enyl ester
(2R,3R,4R)-N-benzyl-3,4-bis(benzyloxy)-2-hydroxymethylpyrrolidine
(1R,2S,3R)-1-(t-butyldiphenylsilyloxy)-1-phenylbutane-2,3,4-triol
tert-Butyl-{(R)-2-[(3aR,5R,6S,6aR)-5-((R)-2,2-dimethyl-[1,3]dioxolan-4-yl)-2,2-dimethyl-tetrahydro-furo[2,3-d][1,3]dioxol-6-yloxy]-1-phenyl-buta-2,3-dienyloxy}-diphenyl-silane
(5S)-(5-TERT-BUTYLDIMETHYLSILOXYMETHYL)FURAN-2(5H)-ONE
(5aS)-7β,9aβ-Dimethyl-6-methylene-4,5,5aα,6,7,8,9,9a-octahydronaphtho[1,2-c]furan-1(3H)-one
Toluene-4-sulfonic acid (4aR,6S,7R,8aS)-6-methoxy-2-phenyl-hexahydro-pyrano[3,2-d][1,3]dioxin-7-yl ester
(3aR,4R,5R,6aS)-5-(benzoyloxy)hexahydro-4-(iodomethyl)-2H-cyclopentafuran-2-one
(1S,RS)-3,4-dihydro-6,7-dimethoxy-1-<(p-tolylsulfinyl)-methyl>isoquinoline
Oxirane, 2-[2-bromo-3-(phenylmethoxy)phenyl]-2-methyl-
C17H18Cl2N6O
Triethyl orthoformate
Silica gel
(2S,3S,4S,5S)-1-(tert-butoxycarbonyl)-3,4-bis-(benzyloxy)-2-((benzyloxy)methyl)-5-(3,3-dimethoxypropyl)pyrrolidine
(1S)-1,3-dimethyl-2-(2-methoxyethyl)-2-cyclohexene-1-carboxylic acid methyl ester
methyl 3α,7α-diacetyl-11β-benzylamino-12α-oxo-5β,17β-cholan-24-one
11-amino-6-(4-chlorophenyl)-6,7-dihydroindeno[1,2-e]pyrimido[4,5-b][1,4]diazepin-5(5aH)-one
(4S,2S)-4-Chloro-<2-<<(1,1-dimethylethoxy)carbonyl>amino>-3-oxo-3-<2-oxo-4-(phenylmethyl)-3-oxazolidinyl>propyl>benzene
(1R,2S,6S,7R,8R)-7-Benzyloxy-3,5,10,11-tetraoxa-4-thia-tricyclo[6.2.1.02,6]undecane 4,4-dioxide
methyl 4,6-O-benzylidene-3-C-cyano-2-deoxy-3-O-methanesulphonyl-α-D-arabino-hexopyranoside
Dichloromethane
Potassium cyanide
dimethyl 3-(2-iodo-3,4,5-trimethoxybenzoyloxy)-2,2',3',4'-tetramethoxy-1,1'-diphenylether-5,6'-dicarboxylate
(2S,4S)-1-{[tert-Butyl(diphenyl)silyl]oxy}-4,8-dimethylnon-7-en-2-ol
ethanol
Pyridine
(2S,αS)-1-(α-carbamoyl-α-phenylmethyl)-pyrrolidine-2-carboxylic acid methyl ester
N-[N-(tert-butoxycarbonyl)-2-(2-hydroxyethyl)-L-prolyl]-D-leucine benzyl ester
methyl 4-methylene-6-(phenylthio)hexanoate
(6R)-2-ethyl-3-methyl-4-(p-nitrobenzyloxycarbonyl)-2-azacephem
N-Acetyl-N-(2-benzoyl-3-methyl-phenyl)-acetamide
(5R-cis)-5,6-dihydro-5-hydroxy-6-<2-<<(1,1-dimethylethyl)diphenylsilyl>oxy>ethyl>-2H-pyran-2-one
(4aR,6S,7R,8aS)-6-{2-Benzenesulfonyl-3-[(E)-4-(4-methoxy-benzyloxy)-3-methyl-but-2-enyl]-oxiranylmethyl}-2,2-di-tert-butyl-7-triethylsilanyloxy-hexahydro-1,3,5-trioxa-2-sila-naphthalene
tert-butyl-(5-isopropenyl-2,3-dimethyl-cyclohex-1-enyloxy)-dimethyl-silane
(R)-3-(tert-Butyl-dimethyl-silanyloxy)-4-((S)-4-methyl-cyclohex-1-enyl)-butan-1-ol
2H-Pyran, 2-(3-butenyl)-6-(1,1-dimethylethoxy)tetrahydro-3-(phenylmethoxy)-, (2R,3S,6R)-
C35H48OSi
Shiraiachrome A
C40H56O10
Z-2-(4-chlorobut-2-enyl)cyclohexanone
Ether
Cyclohexanone
(2S,3R,6S,7S,8R,9R,10R,13S,15R)-15-tert-butyloxycarbonylamino-3,6:10,13-diepoxy-8-o-fluorobenzoyloxy-2,9-dimethyloctadecanoic acid
2-[2-bromo-3-(2-hydroxy-ethoxymethyl)-benzyloxy]-ethanol
(7aR,13aR)-3,3-dimethyl-7a,13a-dihydro-3H,7H-[1,3]dioxolo[5,6][1]benzofuro[3,2-c]pyrano[3,2-g]chromene
