Rishitin isolation

Lyon, GD., Mayo, M.A. The phytoalexin rishitin affects the viability of isolated plant protoplasts. Phytopathol Z 1978 92 294-304. 

Suleman, P., Tohamy, A.M., Saleh, A. A., Madkour, M.A., Straney, D.C. Variation in sensitivity to tomatine and rishitin among isolates of Fusarium oxysporum f. sp. lycopersici, and strains not pathogenic on tomato. Physiol Mol Plant Pathol 1996 48 131-144. 

An investigation of the metabolism of sesquiterpenoid phytoalexins has shown that pepper or potato cell cultures can convert capsidiol (485) and rishitin (450) into their 13-hydroxy-derivatives cf. p. 136). Solavetivane derivatives of this type have previously been isolated from flue-cured tobacco (Vol. 8, p. 107). New chemical and spectroscopic evidence has led to a revised configuration for the 3-hydroxy- or 3-acyloxy-substituent in furanofukinol (486) (Petasites japonica Maxim.) and the related esters (487) and (488), previously isolated from Farfugium hiberniflorum Kitam. ... 

Rishitin (40) is an antifiigal norsesquiterpene, qualified as phytoalexin and this was isolated from tuber tissues of white potatoes infected by an incompatible race of Phytophthora infestans. It was isolated21 by... 

Katsui et al.,76 isolated two phytoalexins sesquiterpenes lubimin (144) and oxylubimin (145) from white potato tubers (Rishri) infected by an incompatible race of Phytophthora infestans. It has already been mentioned that from white potato tubers also have been isolated sesquiterpene rishitin (40). In the year 1971 Metliskii and coworkers77 isolated lubimin (144) along with rishitin (40) from white potato tubers (S.tuberlosum Lubimets ) stressed with various pathogens. 

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