Cyanogenesis in glucosinolate-producing plants: Carica papaya and Carica quercifolia
作者:E Olafsdottir
DOI:10.1016/s0031-9422(02)00106-1
日期:2002.6
(R)-2-(beta-D-Glucopyranosyloxy)-2-phenylacetonitrile (prunasin) was isolated from Carica papaya L. and C. quercifolia (A. St.-Hil.) Hieron. (syn. C. hastata Brign.). Earlier reported presence of cyclopentanoid cyanohydrin glycosides in C. papaya could not be confirmed, and no cyclopentanoid amino acids could be detected in extracts of C. papaya and C. quercifolia. Conversion of [2,3,4,5,6-3H]phenylalanine into tritiated
从 Carica papaya L. 和 C. quercifolia (A. St.-Hil.) Hieron 中分离出 (R)-2-(β-D-吡喃葡萄糖基氧基)-2-苯基乙腈 (prunasin)。(同义词 C. hastata Brign.)。早先报道的番木瓜中存在环戊烷氰醇糖苷的报道无法得到证实,并且在番木瓜和槭树的提取物中未检测到环戊烷类氨基酸。[2,3,4,5,6-3H] 苯丙氨酸转化为氚化的 prunasin 在这两个物种中都得到了证明。另一方面,当植物被给予[2-14C]-2-(2'环戊烯基)甘氨酸,提取,并且提取物用β-葡糖苷酶(Helix pomatia)水解时,没有观察到标记氰化物的形成。缺乏西番莲科典型的环戊烷类化合物,并且 Carica 物种无法利用 2-(2' -环戊烯基)甘氨酸作为氰苷的前体与 Caricaceae 和 Passifloraceae 的相对系统发育位置一致。因此,Carica