abbreviation A adenosine A alanine AA arachidonic acid AA asymmetric aminohydroxylation AAA asymmetric allylic alkylation AAC1 unimolecular acid-catalyzed hydrolysis with acyl scission AAC2 bimolecular acid-catalyzed hydrolysis with acyl scission AAL1 unimolecular acid-catalyzed hydrolysis with alcoholic scission AAS atomic absorption spectroscopy ABS alkylbenzenesulfonate Ac acetyl ac anticlinal acac acetylacetonato acaen N,N'-bis(1-methyl-3-oxobutylidene)ethylenediamine ACBZ 4-azidobenzyloxycarbonyl ACE alpha-chloroethoxycarbonyl ACHC 2-aminocyclohexanecarboxylic acid AcHmb 2-acetoxy-4-methoxybenzyl Acm acetamidomethyl ACP acyl carrier protein ACTH adrenocorticotropic hormone AD asymmetric dihydroxylation ad adamantyl ADDP 1,1'-(azodicarbonyl)dipiperidine Ade adenine AdE2 bimolecular electrophilic addition ADMET acyclic diene metathesis polymerization Adoc 1-adamantyloxycarbonyl ADP adenosine 5'-diphosphate Adpoc 1-(1-adamantyl)-1-methylethoxycarbonyl AE asymmetric epoxidation AIBN 2,2'-azobisisobutyronitrile Ala alanine Alloc allyloxycarbonyl Als allylsulfonyl Am amyl (or n-pentyl) AMP adenosine 5'-monophosphate amu atomic mass unit AN acceptor number An (or AN) p-anisyl (4-methoxyphenyl) anhyd anhydrous Anpe 2-(4-acetyl-2-nitrophenyl)ethyl ANRORC anionic ring-opening ring-closing ANS 8-anilino-1-naphthalenesulfonate AO atomic orbital AOC allyloxycarbonyl p-AOM p-anisyloxymethyl AOT sodium di(2-ethylhexyl) sulfosuccinate ap antiperiplanar APCI atmospheric pressure chemical ionization aq aqueous AQN anthraquinone Ar aryl (or argon) Ara arabinose Arg arginine Asn asparagine Asp aspartic acid ATD aluminum tris(2,6-di-tert-butyl-4-methylphenoxide) atm atmosphere ATP adenosine 5'-triphosphate ATPH aluminum tris(2,6-diphenylphenoxide) au atomic unit Azb p-azidobenzyl AZT 3'-azido-3'-d...