Piscidic acid

The absolute configuration of the side chain of isoharringtonine has been deduced (174) to be 2R,35(299) by comparing the CD spectra of its molybdate complexes with those of piscidic acid (300) of known absolute configuration. 

Ting (unpublished) was able to show, however, that the main organic acids produced by dark CO2 fixation in Euphorbia loricata did not cochromatograph with pure, authentic phorbic acid (generously supplied by Dr. Nordal) and that the main organic acid was, in fact, malic acid Hence, it is unlikely that phorbic and piscidic acid play a predominant role in CAM. 

Piperinic acid, T1 Piperitenone oxide, T4 Piperitols, T4 Piperitone, T2 Piperitone oxide, T4 Pipitzols, T1 Pisatin, Y3 Piscidic acid, A30 Plathyterpol, T39 Platicodigenin, T45 Platydesmine, K31 Platynecine, K22 Plicatic acid, Y7 Plinols, T3 Plumericin, T16 Plumieride, T16 Pluviine, K6 Podocarpic acid, T33 Podolactones, T38 Polyether antibiotics, Yll Polyporenic acid A, T50 Ponasterone, T48 Porantherine, K29 Porphyrins, Y23 Portentol, Y15 Portulal T40 Preisocalamendiol, T22 Pretoxin, T31 Pristimerin, T45 Pristimerol, T45 Proaporphine alkaloids, K3 Proline, All Prolinol, A17 Pronuciferine, K3 19-propylthevinol, K4 Prostaglandins, Y16 Protoaphins, YIO Protoemetine, K2 Protostanes, T50... 

The lithium enolate of R,R-tartrate acetonide (11) is another easily accessible chiral molecule and has been alkylated by reactive electrophiles (allyl and benzyl halides) with excellent stereospecificity (>80%). This approach has been used in the synthesis of piscidic acid (12). Similarly, the dioxolanones (13) (from pivalaldehyde and 5-lactic acid) and (14) (from mandelic acid), and the... 

Pisatin, Y3 Piscidic acid, A30 Platicodigenin, T4S Platydesmine, K31 Platynecine, K22 PlenoUn, T9 ... 

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