Cryptoxanthin has been synthesized from acetoxy-β-C19-aldehyde and β-C21-acetylenic carbinol following the scheme C19 + C21 = C40. The C19-aldehyde was obtained from keto-iso-C14-aldehyde via the acetoxy-β-C14- and -C14-aldehydes. The optically inactive synthetic cryptoxanthin has the same melting point as the natural product, and the absorption spectra of the solutions are identical. Starting with
                                    隐已从乙酰氧基-β-C合成19 -醛和β-C 21的方式C以下-acetylenic
甲醇19 + C 21 = C 40。的C 19从酮异C得到-醛14经由乙酰氧基-β-C -醛14和-C - 14 -醛。光学惰性的合成
隐黄质具有与
天然产物相同的熔点,溶液的吸收光谱相同。与乙酰氧基-β-C开始19 -醛,
玉米黄质的改善的合成developped时,方式C以下19 + C 2 + C 19。