We claim,
1. A process for the preparation of Anidulafungin which comprising the following steps;
a) treating 4"-(Pentyloxy)-l, r:4',l"-terphenyl-4-carboxylic acid with 2-Chloro-4,6-dimethoxy-l,3,5-triazine (CDMT) in a solvent with base to prepare compound of Formula II; (2-({[4"-(Pentyloxy)-l, l':4',l"-terphenyl-4-yl]carbonyl}oxy)-4,6-dimethoxy-1,3,5-triazine)
b) reacting the compound of Formula II of step (a) with Echinocandin B in a mixture of solvent and base to obtain Anidulafungin, wherein the said Echinocandin B is in hydrochloride form;
c) reacting the compound of Formula II of step (a) with Echinocandin B in a mixture of solvent to obtained Anidulafungin, wherein the said Echinocandin B is in base form;
d) purifying the product obtained in step (b) & step (c) using protic solvents containing fructose.
2. Compound of Formula II (2-({ [4"-(Pentyloxy)-1, 1 *:4', 1 "-terphenyl-4-
yl]carbonyl}oxy)-4,6-dimethoxy-l,3,5-triazine)
The process as claimed in claim 1, wherein the solvent used in step (a) is Dimethyl sulphoxide, N, N-Dimethyl formamide and most preferably N, N-Dimethyl formamide.
The process as claimed in claim 1, wherein the base used in step (a) is Triethylamine, Diisopropyl ethylamine and N-methyl morpholine, preferably triethylamine and most preferably N-methyl morpholine.
The process as claimed in claim 1, wherein the temperature of the reaction in step (a) is between 10° and 40°C and preferably between 20°C and 30°C and most preferably between 25°C and 30°C.

The process as claimed in claim 1, wherein duration of the reaction in step (a) is between 1 and 5hrs and preferably between 2 and 4 hrs and most preferably between 2 and 3 hrs.
The process as claimed in claim 1, wherein reacting the compound of Formula II of step (a) with Echinocandin B hydrochloride in N,N-Dimethyl formamide(DMF), N-Methyl morpholine (NMM), toluene or mixture thereof at the temperature between 30-40°C to obtain Anidulafungin.
The process as claimed in claim 1, wherein the solvent used in the Step (b) & (c) is N,N-Dimethyl formamide(DMF), toluene, Tetrahydrofuran, more preferably DMF and toluene.
The process as claimed in claim 1, wherein the temperature of the reaction in step (b) & (c) is between 10° and 50°C and preferably between 20°C and 40°C and most preferably between 30°C and 40°C.
). The process as claimed in claim 1, wherein duration of the reaction in step (b) & (c) is between 2 and lOhrs and preferably between 4 and 8 hrs and most preferably between 3 and 6 hrs.
[. The process as claimed in claim 1, wherein the protic solvent used in step (d) is methanol, ethanol, propanol, isopropanol or mixture thereof; preferably methanol, ethanol or mixture thereof; most preferably ethanol.